A numerical measure of linear association between two variables is the _____.
A) variance
B) z-score
C) correlation coefficient
D) None of the answers is correct.

Question

Quizplus · Accepted Answer

The correlation coefficient is a numerical measure of the strength and direction of the linear association between two variables. It ranges from -1 to +1, where a value of -1 indicates a perfect negative relationship, 0 indicates no relationship, and +1 indicates a perfect positive relationship. Therefore, C is the best answer because it directly answers the question. A, B, and D are incorrect because they do not measure linear association between variables.

A Numerical Measure of Linear Association Between Two Variables Is