If the scores of either the X or Y variable are restricted in value, then we expect
A)a larger value of r than if the scores were not restricted in value
B)r to equal either +1.00 or -1.00
C)a smaller value of r than if the scores were not restricted in value
D)it will have no effect on r

Question

Quizplus · Accepted Answer

When the scores of either the X or Y variable are restricted in value, it decreases the range of scores which in turn reduces the variation of scores. As correlation coefficient r is based on the variation of scores, a smaller value of r is expected when the scores are restricted in value.

If the Scores of Either the X or Y Variable