Gas mileage
As the example in the chapter indicates, one of the important factors determining a cars Fuel Efficiency is its Weight. Let's examine this relationship again, for 11 cars.
a) Describe the association between these variables shown in the scatterplot.
![2332_Graph 8.jpg](https://secure.tutorsglobe.com/CMSImages/2332_Graph%208.jpg)
b) Here is the regression analysis for the linear model. What does the slope of the line say about this relationship?
![1932_Data 1.jpg](https://secure.tutorsglobe.com/CMSImages/1932_Data%201.jpg)
c) Do you think this linear model is appropriate? Use the residuals plot to explain your decision.
![1058_Graph 9.jpg](https://secure.tutorsglobe.com/CMSImages/1058_Graph 9.jpg)