There is a _____ between the mean IQ of a nation and average ratings of national happiness.
A)positive correlation
B)negative correlation
C)cause-and-effect relationship
D)equal standard deviation

Question

Quizplus · Accepted Answer

Studies have shown a positive correlation between the mean IQ of a nation and average ratings of national happiness, indicating that as one increases, the other tends to increase as well, but this does not imply a cause-and-effect relationship.

There Is a _____ Between the Mean IQ of a Nation