Disclosure: This is a homework question.
I have fit a multiple linear regression model in eviews, and I am asked to calculate "estimated unbiased variance of the error term, i.e., $\hat\sigma^2$".
What confused me was "estimated unbiased" part.
I have done a Google search for exact term "estimated unbiased variance of the error term". However, I didn't get an exact result.
My approach was to calculate variance of residuals through
genr varresid = @var(resid) (eviews command). However, I am not sure if this is the number I am trying to get.
So, my question is, what is the formula for the estimated unbiased variance of the error term?