What does the 'standardized residual' represent?
ri=eiσ^r_i = \frac{e_i}{\hat{\sigma}}ri=σ^ei
ri=eiσ^1−hiir_i = \frac{e_i}{\hat{\sigma} \sqrt{1 - h_{ii}}}ri=σ^1−hiiei
The residual divided by the standard deviation of the residuals.
The residual divided by the standard error of the estimate.