The arm span and foot length were both measured (in centimeters) for each of 20 students in a biology class. The computer output displays the regression analysis. Open image in full-screen view Which of the following is the best interpretation of the coefficient of determination r squared ?
Answer
A
About 37 percent of the variation in arm span is accounted for by the linear relationship formed with the foot length.
B
About 63 percent of the variation in foot length is accounted for by the linear relationship formed with the arm span.
C
About 63 percent of the variation in arm span is accounted for by the linear relationship formed with the foot length.
D
About 65 percent of the variation in foot length is accounted for by the linear relationship formed with the arm span.