The Pearson product-moment correlation coefficient,r,requires that variables be measured with ________.
A)an interval or ratio scale
B)an ordinal or ratio scale
C)a nominal or ordinal scale
D)a nominal or ratio scale

Question

Quizplus · Accepted Answer

The Pearson product-moment correlation coefficient, r, is used to measure the strength and direction of the linear relationship between two interval or ratio scaled variables. Therefore, option A is the best choice as it involves both interval and ratio scales.

The Pearson Product-Moment Correlation Coefficient,r,requires That Variables Be Measured with ________