=+42. EPA mpg 2013. In 2008, the EPA revised their methods for estimating the fuel efficiency (mpg) of cars—a factor that plays an increasingly important role in car sales. How do the new highway and city estimated mpg values relate to each other? Here’s a scatterplot for 76 family sedans as reported by the U.S. government. These are the same cars as in Exercise 41.

Highway mpg 25 30 35 45 22.5 30.0 37.5 45.5 City mpg 40