Suppose that the correlation between height and weight for adults is +.75.What proportion (or percent)of the variability in weight is accounted for by the relationship with height?
A)75%
B)25%
C)56%
D)unable to determine

Question

Quizplus · Accepted Answer

The correlation coefficient between height and weight represents the strength and direction of the linear relationship between the two variables. The correlation coefficient squared (r^2) represents the proportion of variability in weight that is accounted for by the relationship with height. Therefore, r^2 = 0.75^2 = 0.56, or 56%. So, the correct answer is C.

Suppose That the Correlation Between Height and Weight for Adults