Question 14.28

14.28 Sloppy writing about correlation. Each of the following statements contains a blunder. Explain in each case what is wrong.

  1. (a) “There is a high correlation between the manufacturer of a car and the gas mileage of the car.”

  2. (b) “We found a high correlation (r = 1.09) between the horsepower of a car and the gas mileage of the car.”

  3. (c) “The correlation between the weight of a car and the gas mileage of the car was found to be r = 0.53 miles per gallon.”