Durbin-Watson test Warning #3
Description
In lmtest::dwtest(mod) :
exact p value cannot be computed (not in [0,1]), approximate p value will be used
Likely causes:
- Small sample size: The Durbin-Watson test is sensitive to the number of observations. With fewer than ~15 observations, it struggles to compute exact p-values.
- Perfect multicollinearity or singularity: Something odd in your model might be causing unstable residuals.
- Constant residuals or very low variance in residuals.
- NA or NaN values in the model or data frame.