The Excel file National Football League provides various data on professional football for one season.
a. Construct a scatter diagram for Points/ Game and Yards/ Game in the Excel file. Does there appear to be a linear relationship?
b. Develop a regression model for predicting Points/ Game as a function of Yards/ Game. Explain the statistical significance of the model.
c. Draw conclusions about the validity of the regression analysis assumptions from the residual plot and standard residuals.