In this chapter, you will learn how to:

13.1 Define regression residuals, squared residuals, and standardized residuals and understand how these values are calculated.

13.2 Identify the assumptions associated with regression residuals, demonstrating an understanding of the conditions that underlie regression analysis.

13.3 Interpret graphs of regression residuals, showing the ability to diagnose gross violations of regression assumptions.

13.4 Apply formal statistical tests to regression residuals and use the results to assess the adequacy of a regression model.

13.5 Recognize the consequences of violating assumptions about regression residuals and explore strategies for addressing these violations.