Suppose that college grade point average and the verbal portion of an IQ test had a correlation of .63. What percent of the variance do those two have in common?
A) 40
B) 80
C) 63
D) 16.

Question

Quizplus · Accepted Answer

To find the percent of variance that two variables have in common, you square the correlation coefficient. So, $0.63^2 = 0.3969$, which is approximately 40%.

Suppose That College Grade Point Average and the Verbal Portion