# Rushing for points What is the relationship between rushing yards and points scored in the 2011…

Rushing for points What is the relationship between rushing yards and points scored in the 2011 National Football League? The table below gives the number of rushing yards and the number of points scored for each of the 16 games played by the 2011 Jacksonville Jaguars.

(a) Make a scatterplot with rushing yards as the explanatory variable. Describe what you see.

(b) The number of rushing yards in Game 16 is an outlier in the x direction. What effect do you think this game has on the correlation? On the equation of the least square’s regression line? Calculate the correlation and equation of the least-squares regression line with and without this game to confirm your answers.

(c) The number of points scored in Game 13 is an outlier in the y direction. What effect do you think this game has on the correlation? On the equation of the least-squares regression line? Calculate the correlation and equation of the least-squares regression line with and without this game to confirm your answers.

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