Draw conclusions about the validity of the regression analysis assumptions from the residual plot and standard residuals
The Excel file National Football League provides various data on professional football for the 2007 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. d. Find a 95% confidence interval for the mean number of Points/Game for teams with 300 Yards/Game. e. Find a 95% prediction interval for a team having 300 Yards/Game.