Assume that X and Y correlate .4, are in Z score form, and that a particular value of X is 1. What is the predicted value of Y ?
A)0
B).4
C).6
D)1

Question

Quizplus · Accepted Answer

Since X and Y have a correlation of .4, the predicted value of Y for a particular value of X (which is 1 in Z score form) is simply the correlation coefficient itself, which is .4. This is because in Z score form, the mean is 0 and the standard deviation is 1, so the predicted value of Y for a Z score of 1 in X is 1 times the correlation coefficient, which is .4.

Assume That X and Y Correlate