Suppose that the correlation between weight and the number of hours spent working out per week is +.84. What proportion (or percent) of the variability in weight is accounted for by the relationship with the number of hours spent working out?
A) 91%
B) 71%
C) 42%
D) Cannot be determined

Question

Quizplus · Accepted Answer

The proportion of variability accounted for by the relationship is given by the square of the correlation coefficient. So, 0.84^2 = 0.7056, which is approximately 71%.

Suppose That the Correlation Between Weight and the Number of Hours