Question: Cars, correlations What factor most explains differences in Fuel Efficiency among cars? Below is a correlation matrix exploring that relationship for the cars Weight (1000

Cars, correlations What factor most explains differences in Fuel Efficiency among cars? Below is a correlation matrix exploring that relationship for the car’s Weight (1000 lb), Horsepower, Displacement, and number of Cylinders.

(Data in Cars)

a) Which factor seems most strongly associated with Fuel Efficiency?

b) What does the negative correlation indicate?

c) Explain the meaning of R2 for that relationship.

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