Additional Topics in Regression Added Variable Plots (RMD) Added Variable Plots (PDF) Data for Added Variable Plots Cross Validation (RMD) Cross Validation (PDF) Data for Cross Validation Choosing Predictors (RMD) Choosing Predictors (PDF) Choosing Predictors, Part II (RMD) Choosing Predictors, Part II (PDF) Leverage (RMD) Leverage (PDF) Data for the Above