Suppose that Dr. Poonamallee finds a correlation of +.68 between the amount of humor professors use and the grades that students earn in their classes. What can he appropriately conclude from this finding?
A) There is no meaningful relationship between these two variables.
B) Greater use of humor is associated with higher grades.
C) Greater use of humor is associated with lower grades.
D) Humor, or the lack of it, causes student grades to be higher or lower.

Question

Quizplus · Accepted Answer

A correlation coefficient of +.68 indicates a strong positive relationship between the amount of humor professors use and the grades that students earn in their classes. Therefore, greater use of humor is associated with higher grades. However, correlation does not prove causation, so it is not appropriate to conclude that humor causes higher grades.

Suppose That Dr