Topic: Specification Checks and Residual Patterns

Using Specification Tests Without Searching for Significance

Testing an Omitted Quadratic Term With a Partial F Test

Testing a Block of Interaction Terms

Sensitivity Fits for Competing Mean Structures

Separating Mean-Pattern Errors from Unequal Spread

Residual Drift Across Data Collection Order

Residual Patterns Across Categorical Groups

Residual Strata for Detecting Missing Interactions

Residuals Versus Fitted Values for Global Structure

Residual Clusters as Clues to Omitted Subgroups