A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.40.If each of the X values is multiplied by 2 and the correlation is computed for the new scores, what value will be obtained for the new correlation?
A)r = 0.20
B)r = 0.40
C)r = 0.80
D)cannot be determined without knowing all the X and Y scores

Question

Quizplus · Accepted Answer

Multiplying all X values by a constant does not change the correlation coefficient, so the correlation remains r = 0.40.

A Set of N = 15 Pairs of Scores (X