### Home > CCA > Chapter Ch6 > Lesson 6.2.5 > Problem 6-110

6-110.

*Consumer Reports *magazine collected data for the fuel efficiency of cars (miles per gallon) compared to weight (thousands of pounds). The regression model below was created.

Interpret

*R-*squared in context.First calculate

*R*^{2}(*r*^{2}). Note that*R*^{2}% is the amount of variability that can be explained by a linear relationship._____ percent of the variability in __________ can be explained by a linear relationship with _______.

81.5

fuel efficiency

weightInterpret the slope in context.

Think about the units for the slope in this situation.