Studentized (or standardized) residuals permit us to detect cases where the regression predicts poorly.

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Studentized (or standardized) residuals are used to identify outliers, influential observations, and cases that the model does not fit well. These residuals are standardized by dividing them by an estimate of their standard deviation, allowing for a more precise assessment of their magnitude and identifying potential problematic cases.

Studentized (Or Standardized) Residuals Permit Us to Detect Cases Where