diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index 7900997..ee4b11a 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -1,169 +1,3584 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 1. Import pandas library"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 2. Import users table:"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 3. Rename Id column to userId"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 4. Import posts table:"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 5. Rename Id column to postId and OwnerUserId to userId"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 6. Define new dataframes for users and posts with the following selected columns:\n",
-    "    **users columns**: userId, Reputation,Views,UpVotes,DownVotes\n",
-    "    **posts columns**: postId, Score,userId,ViewCount,CommentCount"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 7. Merge both dataframes, users and posts. \n",
-    "You will need to make a [merge](https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.merge.html) of posts and users dataframes."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 8. How many missing values do you have in your merged dataframe? On which columns?"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 9. You will need to make something with missing values.  Will you clean or filling them? Explain. \n",
-    "**Remember** to check the results of your code before passing to the next step"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "#### 10. Adjust the data types in order to avoid future issues. Which ones should be changed? "
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.6.8"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 2
-}
+{
+  "cells": [
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "SXCu_w85sWRX"
+      },
+      "source": [
+        "#### 1. Import pandas library"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "Oazp2DN9sWRY"
+      },
+      "outputs": [],
+      "source": [
+        "import pandas as pd"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "Kt_QAYhOsWRZ"
+      },
+      "source": [
+        "#### 2. Import users table:"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 347
+        },
+        "id": "br1mjAO8sWRZ",
+        "outputId": "19d0c501-cb2a-4951-80da-a251cad2d524"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   Id  Reputation         CreationDate   DisplayName       LastAccessDate  \\\n",
+              "0  -1           1  2010-07-19 06:55:26     Community  2010-07-19 06:55:26   \n",
+              "1   2         101  2010-07-19 14:01:36  Geoff Dalgas  2013-11-12 22:07:23   \n",
+              "2   3         101  2010-07-19 15:34:50  Jarrod Dixon  2014-08-08 06:42:58   \n",
+              "3   4         101  2010-07-19 19:03:27        Emmett  2014-01-02 09:31:02   \n",
+              "4   5        6792  2010-07-19 19:03:57         Shane  2014-08-13 00:23:47   \n",
+              "\n",
+              "                       WebsiteUrl            Location  \\\n",
+              "0  http://meta.stackexchange.com/  on the server farm   \n",
+              "1        http://stackoverflow.com       Corvallis, OR   \n",
+              "2        http://stackoverflow.com        New York, NY   \n",
+              "3    http://minesweeperonline.com   San Francisco, CA   \n",
+              "4         http://www.statalgo.com        New York, NY   \n",
+              "\n",
+              "                                             AboutMe  Views  UpVotes  \\\n",
+              "0  <p>Hi, I'm not really a person.</p>\\r\\n\\r\\n<p>...      0     5007   \n",
+              "1  <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+              "2  <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+              "3  <p>currently at a startup in SF</p>\\r\\n\\r\\n<p>...     11        0   \n",
+              "4  <p>Quantitative researcher focusing on statist...   1145      662   \n",
+              "\n",
+              "   DownVotes  AccountId   Age                     ProfileImageUrl  \n",
+              "0       1920         -1   NaN                                 NaN  \n",
+              "1          0          2  37.0                                 NaN  \n",
+              "2          0          3  35.0                                 NaN  \n",
+              "3          0       1998  28.0  http://i.stack.imgur.com/d1oHX.jpg  \n",
+              "4          5      54503  35.0                                 NaN  "
+            ],
+            "text/html": [
+              "\n",
+              "  <div id=\"df-c657e59d-e2d2-456e-94f3-c0bb8e806222\" class=\"colab-df-container\">\n",
+              "    <div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>Id</th>\n",
+              "      <th>Reputation</th>\n",
+              "      <th>CreationDate</th>\n",
+              "      <th>DisplayName</th>\n",
+              "      <th>LastAccessDate</th>\n",
+              "      <th>WebsiteUrl</th>\n",
+              "      <th>Location</th>\n",
+              "      <th>AboutMe</th>\n",
+              "      <th>Views</th>\n",
+              "      <th>UpVotes</th>\n",
+              "      <th>DownVotes</th>\n",
+              "      <th>AccountId</th>\n",
+              "      <th>Age</th>\n",
+              "      <th>ProfileImageUrl</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>-1</td>\n",
+              "      <td>1</td>\n",
+              "      <td>2010-07-19 06:55:26</td>\n",
+              "      <td>Community</td>\n",
+              "      <td>2010-07-19 06:55:26</td>\n",
+              "      <td>http://meta.stackexchange.com/</td>\n",
+              "      <td>on the server farm</td>\n",
+              "      <td>&lt;p&gt;Hi, I'm not really a person.&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>0</td>\n",
+              "      <td>5007</td>\n",
+              "      <td>1920</td>\n",
+              "      <td>-1</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>2</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 14:01:36</td>\n",
+              "      <td>Geoff Dalgas</td>\n",
+              "      <td>2013-11-12 22:07:23</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>Corvallis, OR</td>\n",
+              "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+              "      <td>25</td>\n",
+              "      <td>3</td>\n",
+              "      <td>0</td>\n",
+              "      <td>2</td>\n",
+              "      <td>37.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>3</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 15:34:50</td>\n",
+              "      <td>Jarrod Dixon</td>\n",
+              "      <td>2014-08-08 06:42:58</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+              "      <td>22</td>\n",
+              "      <td>19</td>\n",
+              "      <td>0</td>\n",
+              "      <td>3</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>4</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 19:03:27</td>\n",
+              "      <td>Emmett</td>\n",
+              "      <td>2014-01-02 09:31:02</td>\n",
+              "      <td>http://minesweeperonline.com</td>\n",
+              "      <td>San Francisco, CA</td>\n",
+              "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>11</td>\n",
+              "      <td>0</td>\n",
+              "      <td>0</td>\n",
+              "      <td>1998</td>\n",
+              "      <td>28.0</td>\n",
+              "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>5</td>\n",
+              "      <td>6792</td>\n",
+              "      <td>2010-07-19 19:03:57</td>\n",
+              "      <td>Shane</td>\n",
+              "      <td>2014-08-13 00:23:47</td>\n",
+              "      <td>http://www.statalgo.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+              "      <td>1145</td>\n",
+              "      <td>662</td>\n",
+              "      <td>5</td>\n",
+              "      <td>54503</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>\n",
+              "    <div class=\"colab-df-buttons\">\n",
+              "\n",
+              "  <div class=\"colab-df-container\">\n",
+              "    <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-c657e59d-e2d2-456e-94f3-c0bb8e806222')\"\n",
+              "            title=\"Convert this dataframe to an interactive table.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "  <svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\" viewBox=\"0 -960 960 960\">\n",
+              "    <path d=\"M120-120v-720h720v720H120Zm60-500h600v-160H180v160Zm220 220h160v-160H400v160Zm0 220h160v-160H400v160ZM180-400h160v-160H180v160Zm440 0h160v-160H620v160ZM180-180h160v-160H180v160Zm440 0h160v-160H620v160Z\"/>\n",
+              "  </svg>\n",
+              "    </button>\n",
+              "\n",
+              "  <style>\n",
+              "    .colab-df-container {\n",
+              "      display:flex;\n",
+              "      gap: 12px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert {\n",
+              "      background-color: #E8F0FE;\n",
+              "      border: none;\n",
+              "      border-radius: 50%;\n",
+              "      cursor: pointer;\n",
+              "      display: none;\n",
+              "      fill: #1967D2;\n",
+              "      height: 32px;\n",
+              "      padding: 0 0 0 0;\n",
+              "      width: 32px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert:hover {\n",
+              "      background-color: #E2EBFA;\n",
+              "      box-shadow: 0px 1px 2px rgba(60, 64, 67, 0.3), 0px 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "      fill: #174EA6;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-buttons div {\n",
+              "      margin-bottom: 4px;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert {\n",
+              "      background-color: #3B4455;\n",
+              "      fill: #D2E3FC;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert:hover {\n",
+              "      background-color: #434B5C;\n",
+              "      box-shadow: 0px 1px 3px 1px rgba(0, 0, 0, 0.15);\n",
+              "      filter: drop-shadow(0px 1px 2px rgba(0, 0, 0, 0.3));\n",
+              "      fill: #FFFFFF;\n",
+              "    }\n",
+              "  </style>\n",
+              "\n",
+              "    <script>\n",
+              "      const buttonEl =\n",
+              "        document.querySelector('#df-c657e59d-e2d2-456e-94f3-c0bb8e806222 button.colab-df-convert');\n",
+              "      buttonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "\n",
+              "      async function convertToInteractive(key) {\n",
+              "        const element = document.querySelector('#df-c657e59d-e2d2-456e-94f3-c0bb8e806222');\n",
+              "        const dataTable =\n",
+              "          await google.colab.kernel.invokeFunction('convertToInteractive',\n",
+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
+              "        element.innerHTML = '';\n",
+              "        dataTable['output_type'] = 'display_data';\n",
+              "        await google.colab.output.renderOutput(dataTable, element);\n",
+              "        const docLink = document.createElement('div');\n",
+              "        docLink.innerHTML = docLinkHtml;\n",
+              "        element.appendChild(docLink);\n",
+              "      }\n",
+              "    </script>\n",
+              "  </div>\n",
+              "\n",
+              "\n",
+              "<div id=\"df-5d9195a6-3d99-49ec-8739-5afce77845f8\">\n",
+              "  <button class=\"colab-df-quickchart\" onclick=\"quickchart('df-5d9195a6-3d99-49ec-8739-5afce77845f8')\"\n",
+              "            title=\"Suggest charts.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n",
+              "     width=\"24px\">\n",
+              "    <g>\n",
+              "        <path d=\"M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zM9 17H7v-7h2v7zm4 0h-2V7h2v10zm4 0h-2v-4h2v4z\"/>\n",
+              "    </g>\n",
+              "</svg>\n",
+              "  </button>\n",
+              "\n",
+              "<style>\n",
+              "  .colab-df-quickchart {\n",
+              "      --bg-color: #E8F0FE;\n",
+              "      --fill-color: #1967D2;\n",
+              "      --hover-bg-color: #E2EBFA;\n",
+              "      --hover-fill-color: #174EA6;\n",
+              "      --disabled-fill-color: #AAA;\n",
+              "      --disabled-bg-color: #DDD;\n",
+              "  }\n",
+              "\n",
+              "  [theme=dark] .colab-df-quickchart {\n",
+              "      --bg-color: #3B4455;\n",
+              "      --fill-color: #D2E3FC;\n",
+              "      --hover-bg-color: #434B5C;\n",
+              "      --hover-fill-color: #FFFFFF;\n",
+              "      --disabled-bg-color: #3B4455;\n",
+              "      --disabled-fill-color: #666;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart {\n",
+              "    background-color: var(--bg-color);\n",
+              "    border: none;\n",
+              "    border-radius: 50%;\n",
+              "    cursor: pointer;\n",
+              "    display: none;\n",
+              "    fill: var(--fill-color);\n",
+              "    height: 32px;\n",
+              "    padding: 0;\n",
+              "    width: 32px;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart:hover {\n",
+              "    background-color: var(--hover-bg-color);\n",
+              "    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "    fill: var(--button-hover-fill-color);\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart-complete:disabled,\n",
+              "  .colab-df-quickchart-complete:disabled:hover {\n",
+              "    background-color: var(--disabled-bg-color);\n",
+              "    fill: var(--disabled-fill-color);\n",
+              "    box-shadow: none;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-spinner {\n",
+              "    border: 2px solid var(--fill-color);\n",
+              "    border-color: transparent;\n",
+              "    border-bottom-color: var(--fill-color);\n",
+              "    animation:\n",
+              "      spin 1s steps(1) infinite;\n",
+              "  }\n",
+              "\n",
+              "  @keyframes spin {\n",
+              "    0% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "      border-left-color: var(--fill-color);\n",
+              "    }\n",
+              "    20% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    30% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    40% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    60% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    80% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "    90% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "  }\n",
+              "</style>\n",
+              "\n",
+              "  <script>\n",
+              "    async function quickchart(key) {\n",
+              "      const quickchartButtonEl =\n",
+              "        document.querySelector('#' + key + ' button');\n",
+              "      quickchartButtonEl.disabled = true;  // To prevent multiple clicks.\n",
+              "      quickchartButtonEl.classList.add('colab-df-spinner');\n",
+              "      try {\n",
+              "        const charts = await google.colab.kernel.invokeFunction(\n",
+              "            'suggestCharts', [key], {});\n",
+              "      } catch (error) {\n",
+              "        console.error('Error during call to suggestCharts:', error);\n",
+              "      }\n",
+              "      quickchartButtonEl.classList.remove('colab-df-spinner');\n",
+              "      quickchartButtonEl.classList.add('colab-df-quickchart-complete');\n",
+              "    }\n",
+              "    (() => {\n",
+              "      let quickchartButtonEl =\n",
+              "        document.querySelector('#df-5d9195a6-3d99-49ec-8739-5afce77845f8 button');\n",
+              "      quickchartButtonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "    })();\n",
+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 2
+        }
+      ],
+      "source": [
+        "users = pd.read_csv(\"users_table.csv\")\n",
+        "users.head()\n",
+        "\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "sUUsZwSRsWRZ"
+      },
+      "source": [
+        "#### 3. Rename Id column to userId"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 347
+        },
+        "id": "b2vA2RIpsWRa",
+        "outputId": "9ef5a48c-d79a-4c8b-9cb5-3cfd8b3e4c29"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   userId  Reputation         CreationDate   DisplayName       LastAccessDate  \\\n",
+              "0      -1           1  2010-07-19 06:55:26     Community  2010-07-19 06:55:26   \n",
+              "1       2         101  2010-07-19 14:01:36  Geoff Dalgas  2013-11-12 22:07:23   \n",
+              "2       3         101  2010-07-19 15:34:50  Jarrod Dixon  2014-08-08 06:42:58   \n",
+              "3       4         101  2010-07-19 19:03:27        Emmett  2014-01-02 09:31:02   \n",
+              "4       5        6792  2010-07-19 19:03:57         Shane  2014-08-13 00:23:47   \n",
+              "\n",
+              "                       WebsiteUrl            Location  \\\n",
+              "0  http://meta.stackexchange.com/  on the server farm   \n",
+              "1        http://stackoverflow.com       Corvallis, OR   \n",
+              "2        http://stackoverflow.com        New York, NY   \n",
+              "3    http://minesweeperonline.com   San Francisco, CA   \n",
+              "4         http://www.statalgo.com        New York, NY   \n",
+              "\n",
+              "                                             AboutMe  Views  UpVotes  \\\n",
+              "0  <p>Hi, I'm not really a person.</p>\\r\\n\\r\\n<p>...      0     5007   \n",
+              "1  <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+              "2  <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+              "3  <p>currently at a startup in SF</p>\\r\\n\\r\\n<p>...     11        0   \n",
+              "4  <p>Quantitative researcher focusing on statist...   1145      662   \n",
+              "\n",
+              "   DownVotes  AccountId   Age                     ProfileImageUrl  \n",
+              "0       1920         -1   NaN                                 NaN  \n",
+              "1          0          2  37.0                                 NaN  \n",
+              "2          0          3  35.0                                 NaN  \n",
+              "3          0       1998  28.0  http://i.stack.imgur.com/d1oHX.jpg  \n",
+              "4          5      54503  35.0                                 NaN  "
+            ],
+            "text/html": [
+              "\n",
+              "  <div id=\"df-df990793-5186-4755-89ce-a95317fab72b\" class=\"colab-df-container\">\n",
+              "    <div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>userId</th>\n",
+              "      <th>Reputation</th>\n",
+              "      <th>CreationDate</th>\n",
+              "      <th>DisplayName</th>\n",
+              "      <th>LastAccessDate</th>\n",
+              "      <th>WebsiteUrl</th>\n",
+              "      <th>Location</th>\n",
+              "      <th>AboutMe</th>\n",
+              "      <th>Views</th>\n",
+              "      <th>UpVotes</th>\n",
+              "      <th>DownVotes</th>\n",
+              "      <th>AccountId</th>\n",
+              "      <th>Age</th>\n",
+              "      <th>ProfileImageUrl</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>-1</td>\n",
+              "      <td>1</td>\n",
+              "      <td>2010-07-19 06:55:26</td>\n",
+              "      <td>Community</td>\n",
+              "      <td>2010-07-19 06:55:26</td>\n",
+              "      <td>http://meta.stackexchange.com/</td>\n",
+              "      <td>on the server farm</td>\n",
+              "      <td>&lt;p&gt;Hi, I'm not really a person.&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>0</td>\n",
+              "      <td>5007</td>\n",
+              "      <td>1920</td>\n",
+              "      <td>-1</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>2</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 14:01:36</td>\n",
+              "      <td>Geoff Dalgas</td>\n",
+              "      <td>2013-11-12 22:07:23</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>Corvallis, OR</td>\n",
+              "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+              "      <td>25</td>\n",
+              "      <td>3</td>\n",
+              "      <td>0</td>\n",
+              "      <td>2</td>\n",
+              "      <td>37.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>3</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 15:34:50</td>\n",
+              "      <td>Jarrod Dixon</td>\n",
+              "      <td>2014-08-08 06:42:58</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+              "      <td>22</td>\n",
+              "      <td>19</td>\n",
+              "      <td>0</td>\n",
+              "      <td>3</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>4</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2010-07-19 19:03:27</td>\n",
+              "      <td>Emmett</td>\n",
+              "      <td>2014-01-02 09:31:02</td>\n",
+              "      <td>http://minesweeperonline.com</td>\n",
+              "      <td>San Francisco, CA</td>\n",
+              "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>11</td>\n",
+              "      <td>0</td>\n",
+              "      <td>0</td>\n",
+              "      <td>1998</td>\n",
+              "      <td>28.0</td>\n",
+              "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>5</td>\n",
+              "      <td>6792</td>\n",
+              "      <td>2010-07-19 19:03:57</td>\n",
+              "      <td>Shane</td>\n",
+              "      <td>2014-08-13 00:23:47</td>\n",
+              "      <td>http://www.statalgo.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+              "      <td>1145</td>\n",
+              "      <td>662</td>\n",
+              "      <td>5</td>\n",
+              "      <td>54503</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>\n",
+              "    <div class=\"colab-df-buttons\">\n",
+              "\n",
+              "  <div class=\"colab-df-container\">\n",
+              "    <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-df990793-5186-4755-89ce-a95317fab72b')\"\n",
+              "            title=\"Convert this dataframe to an interactive table.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "  <svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\" viewBox=\"0 -960 960 960\">\n",
+              "    <path d=\"M120-120v-720h720v720H120Zm60-500h600v-160H180v160Zm220 220h160v-160H400v160Zm0 220h160v-160H400v160ZM180-400h160v-160H180v160Zm440 0h160v-160H620v160ZM180-180h160v-160H180v160Zm440 0h160v-160H620v160Z\"/>\n",
+              "  </svg>\n",
+              "    </button>\n",
+              "\n",
+              "  <style>\n",
+              "    .colab-df-container {\n",
+              "      display:flex;\n",
+              "      gap: 12px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert {\n",
+              "      background-color: #E8F0FE;\n",
+              "      border: none;\n",
+              "      border-radius: 50%;\n",
+              "      cursor: pointer;\n",
+              "      display: none;\n",
+              "      fill: #1967D2;\n",
+              "      height: 32px;\n",
+              "      padding: 0 0 0 0;\n",
+              "      width: 32px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert:hover {\n",
+              "      background-color: #E2EBFA;\n",
+              "      box-shadow: 0px 1px 2px rgba(60, 64, 67, 0.3), 0px 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "      fill: #174EA6;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-buttons div {\n",
+              "      margin-bottom: 4px;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert {\n",
+              "      background-color: #3B4455;\n",
+              "      fill: #D2E3FC;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert:hover {\n",
+              "      background-color: #434B5C;\n",
+              "      box-shadow: 0px 1px 3px 1px rgba(0, 0, 0, 0.15);\n",
+              "      filter: drop-shadow(0px 1px 2px rgba(0, 0, 0, 0.3));\n",
+              "      fill: #FFFFFF;\n",
+              "    }\n",
+              "  </style>\n",
+              "\n",
+              "    <script>\n",
+              "      const buttonEl =\n",
+              "        document.querySelector('#df-df990793-5186-4755-89ce-a95317fab72b button.colab-df-convert');\n",
+              "      buttonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "\n",
+              "      async function convertToInteractive(key) {\n",
+              "        const element = document.querySelector('#df-df990793-5186-4755-89ce-a95317fab72b');\n",
+              "        const dataTable =\n",
+              "          await google.colab.kernel.invokeFunction('convertToInteractive',\n",
+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
+              "        element.innerHTML = '';\n",
+              "        dataTable['output_type'] = 'display_data';\n",
+              "        await google.colab.output.renderOutput(dataTable, element);\n",
+              "        const docLink = document.createElement('div');\n",
+              "        docLink.innerHTML = docLinkHtml;\n",
+              "        element.appendChild(docLink);\n",
+              "      }\n",
+              "    </script>\n",
+              "  </div>\n",
+              "\n",
+              "\n",
+              "<div id=\"df-03e2805c-5ab8-4cf8-b241-dc88d9bb5c10\">\n",
+              "  <button class=\"colab-df-quickchart\" onclick=\"quickchart('df-03e2805c-5ab8-4cf8-b241-dc88d9bb5c10')\"\n",
+              "            title=\"Suggest charts.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n",
+              "     width=\"24px\">\n",
+              "    <g>\n",
+              "        <path d=\"M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zM9 17H7v-7h2v7zm4 0h-2V7h2v10zm4 0h-2v-4h2v4z\"/>\n",
+              "    </g>\n",
+              "</svg>\n",
+              "  </button>\n",
+              "\n",
+              "<style>\n",
+              "  .colab-df-quickchart {\n",
+              "      --bg-color: #E8F0FE;\n",
+              "      --fill-color: #1967D2;\n",
+              "      --hover-bg-color: #E2EBFA;\n",
+              "      --hover-fill-color: #174EA6;\n",
+              "      --disabled-fill-color: #AAA;\n",
+              "      --disabled-bg-color: #DDD;\n",
+              "  }\n",
+              "\n",
+              "  [theme=dark] .colab-df-quickchart {\n",
+              "      --bg-color: #3B4455;\n",
+              "      --fill-color: #D2E3FC;\n",
+              "      --hover-bg-color: #434B5C;\n",
+              "      --hover-fill-color: #FFFFFF;\n",
+              "      --disabled-bg-color: #3B4455;\n",
+              "      --disabled-fill-color: #666;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart {\n",
+              "    background-color: var(--bg-color);\n",
+              "    border: none;\n",
+              "    border-radius: 50%;\n",
+              "    cursor: pointer;\n",
+              "    display: none;\n",
+              "    fill: var(--fill-color);\n",
+              "    height: 32px;\n",
+              "    padding: 0;\n",
+              "    width: 32px;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart:hover {\n",
+              "    background-color: var(--hover-bg-color);\n",
+              "    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "    fill: var(--button-hover-fill-color);\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart-complete:disabled,\n",
+              "  .colab-df-quickchart-complete:disabled:hover {\n",
+              "    background-color: var(--disabled-bg-color);\n",
+              "    fill: var(--disabled-fill-color);\n",
+              "    box-shadow: none;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-spinner {\n",
+              "    border: 2px solid var(--fill-color);\n",
+              "    border-color: transparent;\n",
+              "    border-bottom-color: var(--fill-color);\n",
+              "    animation:\n",
+              "      spin 1s steps(1) infinite;\n",
+              "  }\n",
+              "\n",
+              "  @keyframes spin {\n",
+              "    0% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "      border-left-color: var(--fill-color);\n",
+              "    }\n",
+              "    20% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    30% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    40% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    60% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    80% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "    90% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "  }\n",
+              "</style>\n",
+              "\n",
+              "  <script>\n",
+              "    async function quickchart(key) {\n",
+              "      const quickchartButtonEl =\n",
+              "        document.querySelector('#' + key + ' button');\n",
+              "      quickchartButtonEl.disabled = true;  // To prevent multiple clicks.\n",
+              "      quickchartButtonEl.classList.add('colab-df-spinner');\n",
+              "      try {\n",
+              "        const charts = await google.colab.kernel.invokeFunction(\n",
+              "            'suggestCharts', [key], {});\n",
+              "      } catch (error) {\n",
+              "        console.error('Error during call to suggestCharts:', error);\n",
+              "      }\n",
+              "      quickchartButtonEl.classList.remove('colab-df-spinner');\n",
+              "      quickchartButtonEl.classList.add('colab-df-quickchart-complete');\n",
+              "    }\n",
+              "    (() => {\n",
+              "      let quickchartButtonEl =\n",
+              "        document.querySelector('#df-03e2805c-5ab8-4cf8-b241-dc88d9bb5c10 button');\n",
+              "      quickchartButtonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "    })();\n",
+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 3
+        }
+      ],
+      "source": [
+        "users.rename(columns={\"Id\": \"userId\"}, inplace=True)\n",
+        "users.head()"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "8w_pz9a6sWRa"
+      },
+      "source": [
+        "#### 4. Import posts table:"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 10,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 551
+        },
+        "id": "oj1tIncAsWRa",
+        "outputId": "a0453589-0c54-4466-dbb6-cc916f9b4232"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   Id  PostTypeId  AcceptedAnswerId          CreaionDate  Score  ViewCount  \\\n",
+              "0   1           1              15.0  2010-07-19 19:12:12     23     1278.0   \n",
+              "1   2           1              59.0  2010-07-19 19:12:57     22     8198.0   \n",
+              "2   3           1               5.0  2010-07-19 19:13:28     54     3613.0   \n",
+              "3   4           1             135.0  2010-07-19 19:13:31     13     5224.0   \n",
+              "4   5           2               NaN  2010-07-19 19:14:43     81        NaN   \n",
+              "\n",
+              "                                                Body  OwnerUserId  \\\n",
+              "0  <p>How should I elicit prior distributions fro...          8.0   \n",
+              "1  <p>In many different statistical methods there...         24.0   \n",
+              "2  <p>What are some valuable Statistical Analysis...         18.0   \n",
+              "3  <p>I have two groups of data.  Each with a dif...         23.0   \n",
+              "4  <p>The R-project</p>\\n\\n<p><a href=\"http://www...         23.0   \n",
+              "\n",
+              "       LasActivityDate                                              Title  \\\n",
+              "0  2010-09-15 21:08:26                      Eliciting priors from experts   \n",
+              "1  2012-11-12 09:21:54                                 What is normality?   \n",
+              "2  2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+              "3  2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+              "4  2010-07-19 19:21:15                                                NaN   \n",
+              "\n",
+              "   ... AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+              "0  ...         5.0             1           14.0               NaN   \n",
+              "1  ...         7.0             1            8.0              88.0   \n",
+              "2  ...        19.0             4           36.0             183.0   \n",
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+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 10
+        }
+      ],
+      "source": [
+        "posts = pd.read_csv(\"posts_table.csv\")\n",
+        "posts.head()\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "CohEeF4SsWRa"
+      },
+      "source": [
+        "#### 5. Rename Id column to postId and OwnerUserId to userId"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 11,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 551
+        },
+        "id": "Bcjc-hIdsWRa",
+        "outputId": "06d417e4-4673-452a-d7d1-2e5b2e06d5c3"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   postId  PostTypeId  AcceptedAnswerId          CreaionDate  Score  \\\n",
+              "0       1           1              15.0  2010-07-19 19:12:12     23   \n",
+              "1       2           1              59.0  2010-07-19 19:12:57     22   \n",
+              "2       3           1               5.0  2010-07-19 19:13:28     54   \n",
+              "3       4           1             135.0  2010-07-19 19:13:31     13   \n",
+              "4       5           2               NaN  2010-07-19 19:14:43     81   \n",
+              "\n",
+              "   ViewCount                                               Body  userId  \\\n",
+              "0     1278.0  <p>How should I elicit prior distributions fro...     8.0   \n",
+              "1     8198.0  <p>In many different statistical methods there...    24.0   \n",
+              "2     3613.0  <p>What are some valuable Statistical Analysis...    18.0   \n",
+              "3     5224.0  <p>I have two groups of data.  Each with a dif...    23.0   \n",
+              "4        NaN  <p>The R-project</p>\\n\\n<p><a href=\"http://www...    23.0   \n",
+              "\n",
+              "       LasActivityDate                                              Title  \\\n",
+              "0  2010-09-15 21:08:26                      Eliciting priors from experts   \n",
+              "1  2012-11-12 09:21:54                                 What is normality?   \n",
+              "2  2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+              "3  2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+              "4  2010-07-19 19:21:15                                                NaN   \n",
+              "\n",
+              "   ... AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+              "0  ...         5.0             1           14.0               NaN   \n",
+              "1  ...         7.0             1            8.0              88.0   \n",
+              "2  ...        19.0             4           36.0             183.0   \n",
+              "3  ...         5.0             2            2.0               NaN   \n",
+              "4  ...         NaN             3            NaN              23.0   \n",
+              "\n",
+              "          LastEditDate   CommunityOwnedDate ParentId  ClosedDate  \\\n",
+              "0                  NaN                  NaN      NaN         NaN   \n",
+              "1  2010-08-07 17:56:44                  NaN      NaN         NaN   \n",
+              "2  2011-02-12 05:50:03  2010-07-19 19:13:28      NaN         NaN   \n",
+              "3                  NaN                  NaN      NaN         NaN   \n",
+              "4  2010-07-19 19:21:15  2010-07-19 19:14:43      3.0         NaN   \n",
+              "\n",
+              "  OwnerDisplayName LastEditorDisplayName  \n",
+              "0              NaN                   NaN  \n",
+              "1              NaN                   NaN  \n",
+              "2              NaN                   NaN  \n",
+              "3              NaN                   NaN  \n",
+              "4              NaN                   NaN  \n",
+              "\n",
+              "[5 rows x 21 columns]"
+            ],
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+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
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+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
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+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 11
+        }
+      ],
+      "source": [
+        "posts.rename(columns={\"Id\": \"postId\"}, inplace=True)\n",
+        "posts.rename(columns={\"OwnerUserId\": \"userId\"}, inplace=True)\n",
+        "posts.head()"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "RoOiqzeYsWRa"
+      },
+      "source": [
+        "#### 6. Define new dataframes for users and posts with the following selected columns:\n",
+        "    **users columns**: userId, Reputation,Views,UpVotes,DownVotes\n",
+        "    **posts columns**: postId, Score,userId,ViewCount,CommentCount"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 12,
+      "metadata": {
+        "id": "r-ctauypsWRc"
+      },
+      "outputs": [],
+      "source": [
+        "users_columns = users[['userId','Reputation','Views','UpVotes','DownVotes']]\n",
+        "posts_columns = posts[['postId','Score','userId','ViewCount','CommentCount']]\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "LDyoX7GHsWRc"
+      },
+      "source": [
+        "#### 7. Merge both dataframes, users and posts.\n",
+        "You will need to make a [merge](https://urldefense.com/v3/__https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.merge.html__;!!AcCyiFYNC0XOnw!lfCFXE5uGCv9qjrLdZY-DCos1fSZs94iRmGBBKQPS046lVdCRPm33OgzkPghT7p2wPqquqJwoGerp4s2nRkGJQ$ ) of posts and users dataframes."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 13,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 585
+        },
+        "id": "XqTw58WvsWRc",
+        "outputId": "3d00b39e-335b-45f0-8289-e28cb5454d19"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   postId  PostTypeId  AcceptedAnswerId          CreaionDate  Score  \\\n",
+              "0       2           1              59.0  2010-07-19 19:12:57     22   \n",
+              "1       3           1               5.0  2010-07-19 19:13:28     54   \n",
+              "2       4           1             135.0  2010-07-19 19:13:31     13   \n",
+              "3       5           2               NaN  2010-07-19 19:14:43     81   \n",
+              "4       6           1               NaN  2010-07-19 19:14:44    152   \n",
+              "\n",
+              "   ViewCount                                               Body  userId_x  \\\n",
+              "0     8198.0  <p>In many different statistical methods there...      24.0   \n",
+              "1     3613.0  <p>What are some valuable Statistical Analysis...      18.0   \n",
+              "2     5224.0  <p>I have two groups of data.  Each with a dif...      23.0   \n",
+              "3        NaN  <p>The R-project</p>\\n\\n<p><a href=\"http://www...      23.0   \n",
+              "4    29229.0  <p>Last year, I read a blog post from <a href=...       5.0   \n",
+              "\n",
+              "       LasActivityDate                                              Title  \\\n",
+              "0  2012-11-12 09:21:54                                 What is normality?   \n",
+              "1  2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+              "2  2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+              "3  2010-07-19 19:21:15                                                NaN   \n",
+              "4  2014-05-29 03:54:31  The Two Cultures: statistics vs. machine learn...   \n",
+              "\n",
+              "   ...       LastAccessDate                     WebsiteUrl  \\\n",
+              "0  ...  2013-11-12 22:07:23       http://stackoverflow.com   \n",
+              "1  ...  2014-08-08 06:42:58       http://stackoverflow.com   \n",
+              "2  ...  2014-01-02 09:31:02   http://minesweeperonline.com   \n",
+              "3  ...  2014-08-13 00:23:47        http://www.statalgo.com   \n",
+              "4  ...  2014-08-07 19:49:44  http://www.harlan.harris.name   \n",
+              "\n",
+              "               Location                                            AboutMe  \\\n",
+              "0         Corvallis, OR  <p>Developer on the StackOverflow team.  Find ...   \n",
+              "1          New York, NY  <p><a href=\"http://blog.stackoverflow.com/2009...   \n",
+              "2     San Francisco, CA  <p>currently at a startup in SF</p>\\r\\n\\r\\n<p>...   \n",
+              "3          New York, NY  <p>Quantitative researcher focusing on statist...   \n",
+              "4  District of Columbia  <ul>\\r\\n<li>PhD in CS/AI/Machine Learning/Cogn...   \n",
+              "\n",
+              "   Views UpVotes DownVotes  AccountId   Age  \\\n",
+              "0     25       3         0          2  37.0   \n",
+              "1     22      19         0          3  35.0   \n",
+              "2     11       0         0       1998  28.0   \n",
+              "3   1145     662         5      54503  35.0   \n",
+              "4    114      47         0      46050  41.0   \n",
+              "\n",
+              "                      ProfileImageUrl  \n",
+              "0                                 NaN  \n",
+              "1                                 NaN  \n",
+              "2  http://i.stack.imgur.com/d1oHX.jpg  \n",
+              "3                                 NaN  \n",
+              "4                                 NaN  \n",
+              "\n",
+              "[5 rows x 35 columns]"
+            ],
+            "text/html": [
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+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
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+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>postId</th>\n",
+              "      <th>PostTypeId</th>\n",
+              "      <th>AcceptedAnswerId</th>\n",
+              "      <th>CreaionDate</th>\n",
+              "      <th>Score</th>\n",
+              "      <th>ViewCount</th>\n",
+              "      <th>Body</th>\n",
+              "      <th>userId_x</th>\n",
+              "      <th>LasActivityDate</th>\n",
+              "      <th>Title</th>\n",
+              "      <th>...</th>\n",
+              "      <th>LastAccessDate</th>\n",
+              "      <th>WebsiteUrl</th>\n",
+              "      <th>Location</th>\n",
+              "      <th>AboutMe</th>\n",
+              "      <th>Views</th>\n",
+              "      <th>UpVotes</th>\n",
+              "      <th>DownVotes</th>\n",
+              "      <th>AccountId</th>\n",
+              "      <th>Age</th>\n",
+              "      <th>ProfileImageUrl</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>2</td>\n",
+              "      <td>1</td>\n",
+              "      <td>59.0</td>\n",
+              "      <td>2010-07-19 19:12:57</td>\n",
+              "      <td>22</td>\n",
+              "      <td>8198.0</td>\n",
+              "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+              "      <td>24.0</td>\n",
+              "      <td>2012-11-12 09:21:54</td>\n",
+              "      <td>What is normality?</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2013-11-12 22:07:23</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>Corvallis, OR</td>\n",
+              "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+              "      <td>25</td>\n",
+              "      <td>3</td>\n",
+              "      <td>0</td>\n",
+              "      <td>2</td>\n",
+              "      <td>37.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>3</td>\n",
+              "      <td>1</td>\n",
+              "      <td>5.0</td>\n",
+              "      <td>2010-07-19 19:13:28</td>\n",
+              "      <td>54</td>\n",
+              "      <td>3613.0</td>\n",
+              "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>2013-05-27 14:48:36</td>\n",
+              "      <td>What are some valuable Statistical Analysis op...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-08 06:42:58</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+              "      <td>22</td>\n",
+              "      <td>19</td>\n",
+              "      <td>0</td>\n",
+              "      <td>3</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>4</td>\n",
+              "      <td>1</td>\n",
+              "      <td>135.0</td>\n",
+              "      <td>2010-07-19 19:13:31</td>\n",
+              "      <td>13</td>\n",
+              "      <td>5224.0</td>\n",
+              "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+              "      <td>23.0</td>\n",
+              "      <td>2010-09-08 03:00:19</td>\n",
+              "      <td>Assessing the significance of differences in d...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-01-02 09:31:02</td>\n",
+              "      <td>http://minesweeperonline.com</td>\n",
+              "      <td>San Francisco, CA</td>\n",
+              "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>11</td>\n",
+              "      <td>0</td>\n",
+              "      <td>0</td>\n",
+              "      <td>1998</td>\n",
+              "      <td>28.0</td>\n",
+              "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>5</td>\n",
+              "      <td>2</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>2010-07-19 19:14:43</td>\n",
+              "      <td>81</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+              "      <td>23.0</td>\n",
+              "      <td>2010-07-19 19:21:15</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-13 00:23:47</td>\n",
+              "      <td>http://www.statalgo.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+              "      <td>1145</td>\n",
+              "      <td>662</td>\n",
+              "      <td>5</td>\n",
+              "      <td>54503</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>6</td>\n",
+              "      <td>1</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>2010-07-19 19:14:44</td>\n",
+              "      <td>152</td>\n",
+              "      <td>29229.0</td>\n",
+              "      <td>&lt;p&gt;Last year, I read a blog post from &lt;a href=...</td>\n",
+              "      <td>5.0</td>\n",
+              "      <td>2014-05-29 03:54:31</td>\n",
+              "      <td>The Two Cultures: statistics vs. machine learn...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-07 19:49:44</td>\n",
+              "      <td>http://www.harlan.harris.name</td>\n",
+              "      <td>District of Columbia</td>\n",
+              "      <td>&lt;ul&gt;\\r\\n&lt;li&gt;PhD in CS/AI/Machine Learning/Cogn...</td>\n",
+              "      <td>114</td>\n",
+              "      <td>47</td>\n",
+              "      <td>0</td>\n",
+              "      <td>46050</td>\n",
+              "      <td>41.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "<p>5 rows × 35 columns</p>\n",
+              "</div>\n",
+              "    <div class=\"colab-df-buttons\">\n",
+              "\n",
+              "  <div class=\"colab-df-container\">\n",
+              "    <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-091c7a3e-9985-4fff-95a9-cc2de559ac76')\"\n",
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+              "  </svg>\n",
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+              "  <style>\n",
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+              "\n",
+              "    [theme=dark] .colab-df-convert {\n",
+              "      background-color: #3B4455;\n",
+              "      fill: #D2E3FC;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert:hover {\n",
+              "      background-color: #434B5C;\n",
+              "      box-shadow: 0px 1px 3px 1px rgba(0, 0, 0, 0.15);\n",
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+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "\n",
+              "      async function convertToInteractive(key) {\n",
+              "        const element = document.querySelector('#df-091c7a3e-9985-4fff-95a9-cc2de559ac76');\n",
+              "        const dataTable =\n",
+              "          await google.colab.kernel.invokeFunction('convertToInteractive',\n",
+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
+              "        element.innerHTML = '';\n",
+              "        dataTable['output_type'] = 'display_data';\n",
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+              "</svg>\n",
+              "  </button>\n",
+              "\n",
+              "<style>\n",
+              "  .colab-df-quickchart {\n",
+              "      --bg-color: #E8F0FE;\n",
+              "      --fill-color: #1967D2;\n",
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+              "      --disabled-fill-color: #AAA;\n",
+              "      --disabled-bg-color: #DDD;\n",
+              "  }\n",
+              "\n",
+              "  [theme=dark] .colab-df-quickchart {\n",
+              "      --bg-color: #3B4455;\n",
+              "      --fill-color: #D2E3FC;\n",
+              "      --hover-bg-color: #434B5C;\n",
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+              "      --disabled-bg-color: #3B4455;\n",
+              "      --disabled-fill-color: #666;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart {\n",
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+              "    border: none;\n",
+              "    border-radius: 50%;\n",
+              "    cursor: pointer;\n",
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+              "    fill: var(--fill-color);\n",
+              "    height: 32px;\n",
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+              "\n",
+              "  .colab-df-quickchart:hover {\n",
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+              "    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "    fill: var(--button-hover-fill-color);\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart-complete:disabled,\n",
+              "  .colab-df-quickchart-complete:disabled:hover {\n",
+              "    background-color: var(--disabled-bg-color);\n",
+              "    fill: var(--disabled-fill-color);\n",
+              "    box-shadow: none;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-spinner {\n",
+              "    border: 2px solid var(--fill-color);\n",
+              "    border-color: transparent;\n",
+              "    border-bottom-color: var(--fill-color);\n",
+              "    animation:\n",
+              "      spin 1s steps(1) infinite;\n",
+              "  }\n",
+              "\n",
+              "  @keyframes spin {\n",
+              "    0% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "      border-left-color: var(--fill-color);\n",
+              "    }\n",
+              "    20% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    30% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "      border-right-color: var(--fill-color);\n",
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+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    60% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
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+              "    80% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "    90% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
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+              "  }\n",
+              "</style>\n",
+              "\n",
+              "  <script>\n",
+              "    async function quickchart(key) {\n",
+              "      const quickchartButtonEl =\n",
+              "        document.querySelector('#' + key + ' button');\n",
+              "      quickchartButtonEl.disabled = true;  // To prevent multiple clicks.\n",
+              "      quickchartButtonEl.classList.add('colab-df-spinner');\n",
+              "      try {\n",
+              "        const charts = await google.colab.kernel.invokeFunction(\n",
+              "            'suggestCharts', [key], {});\n",
+              "      } catch (error) {\n",
+              "        console.error('Error during call to suggestCharts:', error);\n",
+              "      }\n",
+              "      quickchartButtonEl.classList.remove('colab-df-spinner');\n",
+              "      quickchartButtonEl.classList.add('colab-df-quickchart-complete');\n",
+              "    }\n",
+              "    (() => {\n",
+              "      let quickchartButtonEl =\n",
+              "        document.querySelector('#df-be8ca925-a9fd-445b-b07c-778ca2c1a6a7 button');\n",
+              "      quickchartButtonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "    })();\n",
+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 13
+        }
+      ],
+      "source": [
+        "merged_df = posts.merge(users, left_on='postId', right_on='userId')\n",
+        "merged_df.head()"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "bBYONTGzsWRc"
+      },
+      "source": [
+        "#### 8. How many missing values do you have in your merged dataframe? On which columns?"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 14,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/"
+        },
+        "id": "ffR13HKnsWRc",
+        "outputId": "23cd369d-26b2-499e-c443-ccc4594b6131"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "postId                       0\n",
+              "PostTypeId                   0\n",
+              "AcceptedAnswerId         23324\n",
+              "CreaionDate                  0\n",
+              "Score                        0\n",
+              "ViewCount                17162\n",
+              "Body                        86\n",
+              "userId_x                   759\n",
+              "LasActivityDate              0\n",
+              "Title                    17162\n",
+              "Tags                     17162\n",
+              "AnswerCount              17162\n",
+              "CommentCount                 0\n",
+              "FavoriteCount            23267\n",
+              "LastEditorUserId         14475\n",
+              "LastEditDate             14231\n",
+              "CommunityOwnedDate       27204\n",
+              "ParentId                 11779\n",
+              "ClosedDate               28174\n",
+              "OwnerDisplayName         27406\n",
+              "LastEditorDisplayName    28267\n",
+              "userId_y                     0\n",
+              "Reputation                   0\n",
+              "CreationDate                 0\n",
+              "DisplayName                  6\n",
+              "LastAccessDate               0\n",
+              "WebsiteUrl               22209\n",
+              "Location                 19700\n",
+              "AboutMe                  21434\n",
+              "Views                        0\n",
+              "UpVotes                      0\n",
+              "DownVotes                    0\n",
+              "AccountId                    0\n",
+              "Age                      22203\n",
+              "ProfileImageUrl          20296\n",
+              "dtype: int64"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 14
+        }
+      ],
+      "source": [
+        "merged_df.isnull().sum(axis = 0)"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "R1k5SdTqsWRc"
+      },
+      "source": [
+        "#### 9. You will need to make something with missing values.  Will you clean or filling them? Explain.\n",
+        "**Remember** to check the results of your code before passing to the next step"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 15,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 878
+        },
+        "id": "nodUlR8MsWRc",
+        "outputId": "d02e3e74-20de-4490-d8b4-50addda7d033"
+      },
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "       postId  PostTypeId  AcceptedAnswerId          CreaionDate  Score  \\\n",
+              "0           2           1              59.0  2010-07-19 19:12:57     22   \n",
+              "1           3           1               5.0  2010-07-19 19:13:28     54   \n",
+              "2           4           1             135.0  2010-07-19 19:13:31     13   \n",
+              "3           5           2               0.0  2010-07-19 19:14:43     81   \n",
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+              "  </svg>\n",
+              "    </button>\n",
+              "\n",
+              "  <style>\n",
+              "    .colab-df-container {\n",
+              "      display:flex;\n",
+              "      gap: 12px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert {\n",
+              "      background-color: #E8F0FE;\n",
+              "      border: none;\n",
+              "      border-radius: 50%;\n",
+              "      cursor: pointer;\n",
+              "      display: none;\n",
+              "      fill: #1967D2;\n",
+              "      height: 32px;\n",
+              "      padding: 0 0 0 0;\n",
+              "      width: 32px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert:hover {\n",
+              "      background-color: #E2EBFA;\n",
+              "      box-shadow: 0px 1px 2px rgba(60, 64, 67, 0.3), 0px 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "      fill: #174EA6;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-buttons div {\n",
+              "      margin-bottom: 4px;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert {\n",
+              "      background-color: #3B4455;\n",
+              "      fill: #D2E3FC;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert:hover {\n",
+              "      background-color: #434B5C;\n",
+              "      box-shadow: 0px 1px 3px 1px rgba(0, 0, 0, 0.15);\n",
+              "      filter: drop-shadow(0px 1px 2px rgba(0, 0, 0, 0.3));\n",
+              "      fill: #FFFFFF;\n",
+              "    }\n",
+              "  </style>\n",
+              "\n",
+              "    <script>\n",
+              "      const buttonEl =\n",
+              "        document.querySelector('#df-24dc88a1-5360-4e8e-9a14-9083b6ecca47 button.colab-df-convert');\n",
+              "      buttonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "\n",
+              "      async function convertToInteractive(key) {\n",
+              "        const element = document.querySelector('#df-24dc88a1-5360-4e8e-9a14-9083b6ecca47');\n",
+              "        const dataTable =\n",
+              "          await google.colab.kernel.invokeFunction('convertToInteractive',\n",
+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
+              "        element.innerHTML = '';\n",
+              "        dataTable['output_type'] = 'display_data';\n",
+              "        await google.colab.output.renderOutput(dataTable, element);\n",
+              "        const docLink = document.createElement('div');\n",
+              "        docLink.innerHTML = docLinkHtml;\n",
+              "        element.appendChild(docLink);\n",
+              "      }\n",
+              "    </script>\n",
+              "  </div>\n",
+              "\n",
+              "\n",
+              "<div id=\"df-ac460aac-ca53-4b02-9b7e-823be036a5fd\">\n",
+              "  <button class=\"colab-df-quickchart\" onclick=\"quickchart('df-ac460aac-ca53-4b02-9b7e-823be036a5fd')\"\n",
+              "            title=\"Suggest charts.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n",
+              "     width=\"24px\">\n",
+              "    <g>\n",
+              "        <path d=\"M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zM9 17H7v-7h2v7zm4 0h-2V7h2v10zm4 0h-2v-4h2v4z\"/>\n",
+              "    </g>\n",
+              "</svg>\n",
+              "  </button>\n",
+              "\n",
+              "<style>\n",
+              "  .colab-df-quickchart {\n",
+              "      --bg-color: #E8F0FE;\n",
+              "      --fill-color: #1967D2;\n",
+              "      --hover-bg-color: #E2EBFA;\n",
+              "      --hover-fill-color: #174EA6;\n",
+              "      --disabled-fill-color: #AAA;\n",
+              "      --disabled-bg-color: #DDD;\n",
+              "  }\n",
+              "\n",
+              "  [theme=dark] .colab-df-quickchart {\n",
+              "      --bg-color: #3B4455;\n",
+              "      --fill-color: #D2E3FC;\n",
+              "      --hover-bg-color: #434B5C;\n",
+              "      --hover-fill-color: #FFFFFF;\n",
+              "      --disabled-bg-color: #3B4455;\n",
+              "      --disabled-fill-color: #666;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart {\n",
+              "    background-color: var(--bg-color);\n",
+              "    border: none;\n",
+              "    border-radius: 50%;\n",
+              "    cursor: pointer;\n",
+              "    display: none;\n",
+              "    fill: var(--fill-color);\n",
+              "    height: 32px;\n",
+              "    padding: 0;\n",
+              "    width: 32px;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart:hover {\n",
+              "    background-color: var(--hover-bg-color);\n",
+              "    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "    fill: var(--button-hover-fill-color);\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart-complete:disabled,\n",
+              "  .colab-df-quickchart-complete:disabled:hover {\n",
+              "    background-color: var(--disabled-bg-color);\n",
+              "    fill: var(--disabled-fill-color);\n",
+              "    box-shadow: none;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-spinner {\n",
+              "    border: 2px solid var(--fill-color);\n",
+              "    border-color: transparent;\n",
+              "    border-bottom-color: var(--fill-color);\n",
+              "    animation:\n",
+              "      spin 1s steps(1) infinite;\n",
+              "  }\n",
+              "\n",
+              "  @keyframes spin {\n",
+              "    0% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "      border-left-color: var(--fill-color);\n",
+              "    }\n",
+              "    20% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    30% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    40% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    60% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    80% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "    90% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "  }\n",
+              "</style>\n",
+              "\n",
+              "  <script>\n",
+              "    async function quickchart(key) {\n",
+              "      const quickchartButtonEl =\n",
+              "        document.querySelector('#' + key + ' button');\n",
+              "      quickchartButtonEl.disabled = true;  // To prevent multiple clicks.\n",
+              "      quickchartButtonEl.classList.add('colab-df-spinner');\n",
+              "      try {\n",
+              "        const charts = await google.colab.kernel.invokeFunction(\n",
+              "            'suggestCharts', [key], {});\n",
+              "      } catch (error) {\n",
+              "        console.error('Error during call to suggestCharts:', error);\n",
+              "      }\n",
+              "      quickchartButtonEl.classList.remove('colab-df-spinner');\n",
+              "      quickchartButtonEl.classList.add('colab-df-quickchart-complete');\n",
+              "    }\n",
+              "    (() => {\n",
+              "      let quickchartButtonEl =\n",
+              "        document.querySelector('#df-ac460aac-ca53-4b02-9b7e-823be036a5fd button');\n",
+              "      quickchartButtonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "    })();\n",
+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 15
+        }
+      ],
+      "source": [
+        "merged_df.fillna(0) # replaced NaN with 0 to allow future calculations"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "QN-AjKg6sWRc"
+      },
+      "source": [
+        "#### 10. Adjust the data types in order to avoid future issues. Which ones should be changed?"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "source": [
+        "merged_df.dtypes"
+      ],
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/"
+        },
+        "id": "OsMYuPiVpx8P",
+        "outputId": "45f7f9a8-5159-4ea2-c0f6-ee67c0fcb975"
+      },
+      "execution_count": 16,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "postId                     int64\n",
+              "PostTypeId                 int64\n",
+              "AcceptedAnswerId         float64\n",
+              "CreaionDate               object\n",
+              "Score                      int64\n",
+              "ViewCount                float64\n",
+              "Body                      object\n",
+              "userId_x                 float64\n",
+              "LasActivityDate           object\n",
+              "Title                     object\n",
+              "Tags                      object\n",
+              "AnswerCount              float64\n",
+              "CommentCount               int64\n",
+              "FavoriteCount            float64\n",
+              "LastEditorUserId         float64\n",
+              "LastEditDate              object\n",
+              "CommunityOwnedDate        object\n",
+              "ParentId                 float64\n",
+              "ClosedDate                object\n",
+              "OwnerDisplayName          object\n",
+              "LastEditorDisplayName     object\n",
+              "userId_y                   int64\n",
+              "Reputation                 int64\n",
+              "CreationDate              object\n",
+              "DisplayName               object\n",
+              "LastAccessDate            object\n",
+              "WebsiteUrl                object\n",
+              "Location                  object\n",
+              "AboutMe                   object\n",
+              "Views                      int64\n",
+              "UpVotes                    int64\n",
+              "DownVotes                  int64\n",
+              "AccountId                  int64\n",
+              "Age                      float64\n",
+              "ProfileImageUrl           object\n",
+              "dtype: object"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 16
+        }
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 25,
+      "metadata": {
+        "id": "NxWJxQxnsWRd"
+      },
+      "outputs": [],
+      "source": [
+        "merged_df[['CreaionDate','LasActivityDate','LastEditDate','CommunityOwnedDate','ClosedDate','CreationDate','LastAccessDate']] = merged_df[['CreaionDate','LasActivityDate','LastEditDate','CommunityOwnedDate','ClosedDate','CreationDate','LastAccessDate']].apply(pd.to_datetime, errors='coerce')"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "source": [],
+      "metadata": {
+        "id": "V_WG_-W_Ni5C"
+      }
+    },
+    {
+      "cell_type": "code",
+      "source": [
+        "merged_df.dtypes"
+      ],
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/"
+        },
+        "id": "dau5GFdW-T6w",
+        "outputId": "b28858fd-ff71-4070-8954-e58eaf1b03b2"
+      },
+      "execution_count": 26,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "postId                            int64\n",
+              "PostTypeId                        int64\n",
+              "AcceptedAnswerId                float64\n",
+              "CreaionDate              datetime64[ns]\n",
+              "Score                             int64\n",
+              "ViewCount                       float64\n",
+              "Body                             object\n",
+              "userId_x                        float64\n",
+              "LasActivityDate          datetime64[ns]\n",
+              "Title                            object\n",
+              "Tags                             object\n",
+              "AnswerCount                     float64\n",
+              "CommentCount                      int64\n",
+              "FavoriteCount                   float64\n",
+              "LastEditorUserId                float64\n",
+              "LastEditDate             datetime64[ns]\n",
+              "CommunityOwnedDate       datetime64[ns]\n",
+              "ParentId                        float64\n",
+              "ClosedDate               datetime64[ns]\n",
+              "OwnerDisplayName                 object\n",
+              "LastEditorDisplayName            object\n",
+              "userId_y                          int64\n",
+              "Reputation                        int64\n",
+              "CreationDate             datetime64[ns]\n",
+              "DisplayName                      object\n",
+              "LastAccessDate           datetime64[ns]\n",
+              "WebsiteUrl                       object\n",
+              "Location                         object\n",
+              "AboutMe                          object\n",
+              "Views                             int64\n",
+              "UpVotes                           int64\n",
+              "DownVotes                         int64\n",
+              "AccountId                         int64\n",
+              "Age                             float64\n",
+              "ProfileImageUrl                  object\n",
+              "dtype: object"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 26
+        }
+      ]
+    },
+    {
+      "cell_type": "code",
+      "source": [
+        "merged_df.head()"
+      ],
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 585
+        },
+        "id": "S28Y0URE-ns2",
+        "outputId": "3dfabd16-8e52-47dc-fc11-4501ea46d022"
+      },
+      "execution_count": null,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "   postId  PostTypeId  AcceptedAnswerId         CreaionDate  Score  ViewCount  \\\n",
+              "0       2           1              59.0 2010-07-19 19:12:57     22     8198.0   \n",
+              "1       3           1               5.0 2010-07-19 19:13:28     54     3613.0   \n",
+              "2       4           1             135.0 2010-07-19 19:13:31     13     5224.0   \n",
+              "3       5           2               NaN 2010-07-19 19:14:43     81        NaN   \n",
+              "4       6           1               NaN 2010-07-19 19:14:44    152    29229.0   \n",
+              "\n",
+              "                                                Body  userId_x  \\\n",
+              "0  <p>In many different statistical methods there...      24.0   \n",
+              "1  <p>What are some valuable Statistical Analysis...      18.0   \n",
+              "2  <p>I have two groups of data.  Each with a dif...      23.0   \n",
+              "3  <p>The R-project</p>\\n\\n<p><a href=\"http://www...      23.0   \n",
+              "4  <p>Last year, I read a blog post from <a href=...       5.0   \n",
+              "\n",
+              "       LasActivityDate                                              Title  \\\n",
+              "0  2012-11-12 09:21:54                                 What is normality?   \n",
+              "1  2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+              "2  2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+              "3  2010-07-19 19:21:15                                                NaN   \n",
+              "4  2014-05-29 03:54:31  The Two Cultures: statistics vs. machine learn...   \n",
+              "\n",
+              "   ...       LastAccessDate                     WebsiteUrl  \\\n",
+              "0  ...  2013-11-12 22:07:23       http://stackoverflow.com   \n",
+              "1  ...  2014-08-08 06:42:58       http://stackoverflow.com   \n",
+              "2  ...  2014-01-02 09:31:02   http://minesweeperonline.com   \n",
+              "3  ...  2014-08-13 00:23:47        http://www.statalgo.com   \n",
+              "4  ...  2014-08-07 19:49:44  http://www.harlan.harris.name   \n",
+              "\n",
+              "               Location                                            AboutMe  \\\n",
+              "0         Corvallis, OR  <p>Developer on the StackOverflow team.  Find ...   \n",
+              "1          New York, NY  <p><a href=\"http://blog.stackoverflow.com/2009...   \n",
+              "2     San Francisco, CA  <p>currently at a startup in SF</p>\\r\\n\\r\\n<p>...   \n",
+              "3          New York, NY  <p>Quantitative researcher focusing on statist...   \n",
+              "4  District of Columbia  <ul>\\r\\n<li>PhD in CS/AI/Machine Learning/Cogn...   \n",
+              "\n",
+              "   Views UpVotes DownVotes  AccountId   Age  \\\n",
+              "0     25       3         0          2  37.0   \n",
+              "1     22      19         0          3  35.0   \n",
+              "2     11       0         0       1998  28.0   \n",
+              "3   1145     662         5      54503  35.0   \n",
+              "4    114      47         0      46050  41.0   \n",
+              "\n",
+              "                      ProfileImageUrl  \n",
+              "0                                 NaN  \n",
+              "1                                 NaN  \n",
+              "2  http://i.stack.imgur.com/d1oHX.jpg  \n",
+              "3                                 NaN  \n",
+              "4                                 NaN  \n",
+              "\n",
+              "[5 rows x 35 columns]"
+            ],
+            "text/html": [
+              "\n",
+              "  <div id=\"df-efffe346-4d9d-48e0-b8cb-3844a5bff4db\" class=\"colab-df-container\">\n",
+              "    <div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>postId</th>\n",
+              "      <th>PostTypeId</th>\n",
+              "      <th>AcceptedAnswerId</th>\n",
+              "      <th>CreaionDate</th>\n",
+              "      <th>Score</th>\n",
+              "      <th>ViewCount</th>\n",
+              "      <th>Body</th>\n",
+              "      <th>userId_x</th>\n",
+              "      <th>LasActivityDate</th>\n",
+              "      <th>Title</th>\n",
+              "      <th>...</th>\n",
+              "      <th>LastAccessDate</th>\n",
+              "      <th>WebsiteUrl</th>\n",
+              "      <th>Location</th>\n",
+              "      <th>AboutMe</th>\n",
+              "      <th>Views</th>\n",
+              "      <th>UpVotes</th>\n",
+              "      <th>DownVotes</th>\n",
+              "      <th>AccountId</th>\n",
+              "      <th>Age</th>\n",
+              "      <th>ProfileImageUrl</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>2</td>\n",
+              "      <td>1</td>\n",
+              "      <td>59.0</td>\n",
+              "      <td>2010-07-19 19:12:57</td>\n",
+              "      <td>22</td>\n",
+              "      <td>8198.0</td>\n",
+              "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+              "      <td>24.0</td>\n",
+              "      <td>2012-11-12 09:21:54</td>\n",
+              "      <td>What is normality?</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2013-11-12 22:07:23</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>Corvallis, OR</td>\n",
+              "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+              "      <td>25</td>\n",
+              "      <td>3</td>\n",
+              "      <td>0</td>\n",
+              "      <td>2</td>\n",
+              "      <td>37.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>3</td>\n",
+              "      <td>1</td>\n",
+              "      <td>5.0</td>\n",
+              "      <td>2010-07-19 19:13:28</td>\n",
+              "      <td>54</td>\n",
+              "      <td>3613.0</td>\n",
+              "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>2013-05-27 14:48:36</td>\n",
+              "      <td>What are some valuable Statistical Analysis op...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-08 06:42:58</td>\n",
+              "      <td>http://stackoverflow.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+              "      <td>22</td>\n",
+              "      <td>19</td>\n",
+              "      <td>0</td>\n",
+              "      <td>3</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>4</td>\n",
+              "      <td>1</td>\n",
+              "      <td>135.0</td>\n",
+              "      <td>2010-07-19 19:13:31</td>\n",
+              "      <td>13</td>\n",
+              "      <td>5224.0</td>\n",
+              "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+              "      <td>23.0</td>\n",
+              "      <td>2010-09-08 03:00:19</td>\n",
+              "      <td>Assessing the significance of differences in d...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-01-02 09:31:02</td>\n",
+              "      <td>http://minesweeperonline.com</td>\n",
+              "      <td>San Francisco, CA</td>\n",
+              "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\r\\n\\r\\n&lt;p&gt;...</td>\n",
+              "      <td>11</td>\n",
+              "      <td>0</td>\n",
+              "      <td>0</td>\n",
+              "      <td>1998</td>\n",
+              "      <td>28.0</td>\n",
+              "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>5</td>\n",
+              "      <td>2</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>2010-07-19 19:14:43</td>\n",
+              "      <td>81</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+              "      <td>23.0</td>\n",
+              "      <td>2010-07-19 19:21:15</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-13 00:23:47</td>\n",
+              "      <td>http://www.statalgo.com</td>\n",
+              "      <td>New York, NY</td>\n",
+              "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+              "      <td>1145</td>\n",
+              "      <td>662</td>\n",
+              "      <td>5</td>\n",
+              "      <td>54503</td>\n",
+              "      <td>35.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>6</td>\n",
+              "      <td>1</td>\n",
+              "      <td>NaN</td>\n",
+              "      <td>2010-07-19 19:14:44</td>\n",
+              "      <td>152</td>\n",
+              "      <td>29229.0</td>\n",
+              "      <td>&lt;p&gt;Last year, I read a blog post from &lt;a href=...</td>\n",
+              "      <td>5.0</td>\n",
+              "      <td>2014-05-29 03:54:31</td>\n",
+              "      <td>The Two Cultures: statistics vs. machine learn...</td>\n",
+              "      <td>...</td>\n",
+              "      <td>2014-08-07 19:49:44</td>\n",
+              "      <td>http://www.harlan.harris.name</td>\n",
+              "      <td>District of Columbia</td>\n",
+              "      <td>&lt;ul&gt;\\r\\n&lt;li&gt;PhD in CS/AI/Machine Learning/Cogn...</td>\n",
+              "      <td>114</td>\n",
+              "      <td>47</td>\n",
+              "      <td>0</td>\n",
+              "      <td>46050</td>\n",
+              "      <td>41.0</td>\n",
+              "      <td>NaN</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "<p>5 rows × 35 columns</p>\n",
+              "</div>\n",
+              "    <div class=\"colab-df-buttons\">\n",
+              "\n",
+              "  <div class=\"colab-df-container\">\n",
+              "    <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-efffe346-4d9d-48e0-b8cb-3844a5bff4db')\"\n",
+              "            title=\"Convert this dataframe to an interactive table.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "  <svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\" viewBox=\"0 -960 960 960\">\n",
+              "    <path d=\"M120-120v-720h720v720H120Zm60-500h600v-160H180v160Zm220 220h160v-160H400v160Zm0 220h160v-160H400v160ZM180-400h160v-160H180v160Zm440 0h160v-160H620v160ZM180-180h160v-160H180v160Zm440 0h160v-160H620v160Z\"/>\n",
+              "  </svg>\n",
+              "    </button>\n",
+              "\n",
+              "  <style>\n",
+              "    .colab-df-container {\n",
+              "      display:flex;\n",
+              "      gap: 12px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert {\n",
+              "      background-color: #E8F0FE;\n",
+              "      border: none;\n",
+              "      border-radius: 50%;\n",
+              "      cursor: pointer;\n",
+              "      display: none;\n",
+              "      fill: #1967D2;\n",
+              "      height: 32px;\n",
+              "      padding: 0 0 0 0;\n",
+              "      width: 32px;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-convert:hover {\n",
+              "      background-color: #E2EBFA;\n",
+              "      box-shadow: 0px 1px 2px rgba(60, 64, 67, 0.3), 0px 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "      fill: #174EA6;\n",
+              "    }\n",
+              "\n",
+              "    .colab-df-buttons div {\n",
+              "      margin-bottom: 4px;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert {\n",
+              "      background-color: #3B4455;\n",
+              "      fill: #D2E3FC;\n",
+              "    }\n",
+              "\n",
+              "    [theme=dark] .colab-df-convert:hover {\n",
+              "      background-color: #434B5C;\n",
+              "      box-shadow: 0px 1px 3px 1px rgba(0, 0, 0, 0.15);\n",
+              "      filter: drop-shadow(0px 1px 2px rgba(0, 0, 0, 0.3));\n",
+              "      fill: #FFFFFF;\n",
+              "    }\n",
+              "  </style>\n",
+              "\n",
+              "    <script>\n",
+              "      const buttonEl =\n",
+              "        document.querySelector('#df-efffe346-4d9d-48e0-b8cb-3844a5bff4db button.colab-df-convert');\n",
+              "      buttonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "\n",
+              "      async function convertToInteractive(key) {\n",
+              "        const element = document.querySelector('#df-efffe346-4d9d-48e0-b8cb-3844a5bff4db');\n",
+              "        const dataTable =\n",
+              "          await google.colab.kernel.invokeFunction('convertToInteractive',\n",
+              "                                                    [key], {});\n",
+              "        if (!dataTable) return;\n",
+              "\n",
+              "        const docLinkHtml = 'Like what you see? Visit the ' +\n",
+              "          '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n",
+              "          + ' to learn more about interactive tables.';\n",
+              "        element.innerHTML = '';\n",
+              "        dataTable['output_type'] = 'display_data';\n",
+              "        await google.colab.output.renderOutput(dataTable, element);\n",
+              "        const docLink = document.createElement('div');\n",
+              "        docLink.innerHTML = docLinkHtml;\n",
+              "        element.appendChild(docLink);\n",
+              "      }\n",
+              "    </script>\n",
+              "  </div>\n",
+              "\n",
+              "\n",
+              "<div id=\"df-606e86e0-4af4-41c8-b1bf-e20fdccd9eb0\">\n",
+              "  <button class=\"colab-df-quickchart\" onclick=\"quickchart('df-606e86e0-4af4-41c8-b1bf-e20fdccd9eb0')\"\n",
+              "            title=\"Suggest charts.\"\n",
+              "            style=\"display:none;\">\n",
+              "\n",
+              "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n",
+              "     width=\"24px\">\n",
+              "    <g>\n",
+              "        <path d=\"M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zM9 17H7v-7h2v7zm4 0h-2V7h2v10zm4 0h-2v-4h2v4z\"/>\n",
+              "    </g>\n",
+              "</svg>\n",
+              "  </button>\n",
+              "\n",
+              "<style>\n",
+              "  .colab-df-quickchart {\n",
+              "      --bg-color: #E8F0FE;\n",
+              "      --fill-color: #1967D2;\n",
+              "      --hover-bg-color: #E2EBFA;\n",
+              "      --hover-fill-color: #174EA6;\n",
+              "      --disabled-fill-color: #AAA;\n",
+              "      --disabled-bg-color: #DDD;\n",
+              "  }\n",
+              "\n",
+              "  [theme=dark] .colab-df-quickchart {\n",
+              "      --bg-color: #3B4455;\n",
+              "      --fill-color: #D2E3FC;\n",
+              "      --hover-bg-color: #434B5C;\n",
+              "      --hover-fill-color: #FFFFFF;\n",
+              "      --disabled-bg-color: #3B4455;\n",
+              "      --disabled-fill-color: #666;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart {\n",
+              "    background-color: var(--bg-color);\n",
+              "    border: none;\n",
+              "    border-radius: 50%;\n",
+              "    cursor: pointer;\n",
+              "    display: none;\n",
+              "    fill: var(--fill-color);\n",
+              "    height: 32px;\n",
+              "    padding: 0;\n",
+              "    width: 32px;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart:hover {\n",
+              "    background-color: var(--hover-bg-color);\n",
+              "    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);\n",
+              "    fill: var(--button-hover-fill-color);\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-quickchart-complete:disabled,\n",
+              "  .colab-df-quickchart-complete:disabled:hover {\n",
+              "    background-color: var(--disabled-bg-color);\n",
+              "    fill: var(--disabled-fill-color);\n",
+              "    box-shadow: none;\n",
+              "  }\n",
+              "\n",
+              "  .colab-df-spinner {\n",
+              "    border: 2px solid var(--fill-color);\n",
+              "    border-color: transparent;\n",
+              "    border-bottom-color: var(--fill-color);\n",
+              "    animation:\n",
+              "      spin 1s steps(1) infinite;\n",
+              "  }\n",
+              "\n",
+              "  @keyframes spin {\n",
+              "    0% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "      border-left-color: var(--fill-color);\n",
+              "    }\n",
+              "    20% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    30% {\n",
+              "      border-color: transparent;\n",
+              "      border-left-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    40% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-top-color: var(--fill-color);\n",
+              "    }\n",
+              "    60% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "    }\n",
+              "    80% {\n",
+              "      border-color: transparent;\n",
+              "      border-right-color: var(--fill-color);\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "    90% {\n",
+              "      border-color: transparent;\n",
+              "      border-bottom-color: var(--fill-color);\n",
+              "    }\n",
+              "  }\n",
+              "</style>\n",
+              "\n",
+              "  <script>\n",
+              "    async function quickchart(key) {\n",
+              "      const quickchartButtonEl =\n",
+              "        document.querySelector('#' + key + ' button');\n",
+              "      quickchartButtonEl.disabled = true;  // To prevent multiple clicks.\n",
+              "      quickchartButtonEl.classList.add('colab-df-spinner');\n",
+              "      try {\n",
+              "        const charts = await google.colab.kernel.invokeFunction(\n",
+              "            'suggestCharts', [key], {});\n",
+              "      } catch (error) {\n",
+              "        console.error('Error during call to suggestCharts:', error);\n",
+              "      }\n",
+              "      quickchartButtonEl.classList.remove('colab-df-spinner');\n",
+              "      quickchartButtonEl.classList.add('colab-df-quickchart-complete');\n",
+              "    }\n",
+              "    (() => {\n",
+              "      let quickchartButtonEl =\n",
+              "        document.querySelector('#df-606e86e0-4af4-41c8-b1bf-e20fdccd9eb0 button');\n",
+              "      quickchartButtonEl.style.display =\n",
+              "        google.colab.kernel.accessAllowed ? 'block' : 'none';\n",
+              "    })();\n",
+              "  </script>\n",
+              "</div>\n",
+              "    </div>\n",
+              "  </div>\n"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 43
+        }
+      ]
+    }
+  ],
+  "metadata": {
+    "kernelspec": {
+      "display_name": "Python 3",
+      "language": "python",
+      "name": "python3"
+    },
+    "language_info": {
+      "codemirror_mode": {
+        "name": "ipython",
+        "version": 3
+      },
+      "file_extension": ".py",
+      "mimetype": "text/x-python",
+      "name": "python",
+      "nbconvert_exporter": "python",
+      "pygments_lexer": "ipython3",
+      "version": "3.6.8"
+    },
+    "colab": {
+      "provenance": []
+    }
+  },
+  "nbformat": 4,
+  "nbformat_minor": 0
+}
\ No newline at end of file