How much variance is explained when a correlation of .9 is found in your analysis of employee IQ and productivity?
A) 81%
B) 18%
C) 9%
D) None of the above

Question

Quizplus · Accepted Answer

When a correlation of .9 is found, the variance explained is equal to the square of the correlation coefficient (r²). Therefore, 0.9² = 0.81, which means that 81% of the variance in employee productivity can be explained by their IQ.

How Much Variance Is Explained When a Correlation of