Which of the following values of r allows a perfect predicti

Which of the following values of r allows a perfect prediction of scores on one variable from knowledge of scores on the other variable?

Question 13 options:

0

0.50

–1.00

2.00

Solution

ANS: D) –1.00

Reason: Value of second variable is dependden on the result of the first variable. We don\'t see a realtion between them prior to the result fof first