Pigskin: In football, a turnover occurs when a team loses possession of the ball due to a fumble or an interception. Turnovers are bad when they happen to your team, but good when they happen to your opponent. The turnover margin for a team is the difference (Turnovers by opponent – Turnovers by team). The following table presents the turnover margin and the total number of wins for each team in the Southeastern Conference (SEC) in a recent season.

a. Compute the least-squares regression line for predicting team wins from turnover margin.

b. Construct a residual plot. Verify that a linear model is appropriate.

c. Which teams won more games than would be predicted from their turnover margin?

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Turnover Team Margin Wins Team Turnover Margin Wins Florida 22 13 Alabama 6 12 Georgia 10 Ole Miss LSU Kentucky 226967 S. Carolina -11 7 Vanderbilt 9 8 Arkansas Auburn Tennessee Miss. State 9%27 -9 4 75550+