Question

Frank Fitness found a correlation coefficient of -0.74 between hours of strenuous exercise each week and a standard measure of body mass. He interprets this to mean that there is a ________ and ________ relationship between hours of strenuous exercise and body mass. a. strong; positive b. strong; negative c. weak; positive d. weak; negative

Answer 1

b. strong; negative

Explanation:

When a correlation has a value greater than 0.74 or lesser than -0.70, it is classified as a strong correlation.

A negative value for a correlation means a negative (downhill) linear correlation.

Therefore, since the correlation coefficient found by Frank Fitness is -0.74, there is a strong and negative relationship between hours of strenuous exercise and body mass.