A specialist in baseball analytics has expanded his analysis, presented in Problem 14.77 on page 580, of which variables are important in predicting a team’s wins in a given baseball season. He has collected data in Baseball related to wins, ERA, saves, runs scored per game, batting average, home runs, and batting average against for a recent season.

Develop the most appropriate multiple regression model to predict a team’s wins. Be sure to include a thorough residual analysis. In addition, provide a detailed explanation of the results.