Suppose you compute the correlation coefficient between two variables, X and Y, and obtain a value of 0.55.Then you realize that all the values for both variables have been corrupted in a way that their actual sign has been changed (positive values were turned into negative values and vice versa; only the signs have been changed).Then the actual, corrected value of the correlation coefficient ______.
A)is −0.55
B)remains unchanged
C)changes but there is not enough information to determine the correct value
D)is 0
E)is 0.50

Question

Quizplus · Accepted Answer

Changing the signs of all values in both variables X and Y does not affect the magnitude of the correlation coefficient, only the direction of the relationship. Since both variables are affected equally, the correlation coefficient remains unchanged at 0.55.

Suppose You Compute the Correlation Coefficient Between Two Variables, X