Which correlation coefficient should we use if we want to find out whether a relationship exists between two variables that are both interval or ratio variables?
A)The Pearson correlation coefficient
B)The Spearman rank-order correlation coefficient
C)The point-biserial correlation coefficient
D)The nonlinear correlation coefficient

Question

Quizplus · Accepted Answer

The Pearson correlation coefficient is used to determine the strength and direction of a linear relationship between two variables that are both interval or ratio variables. It measures the degree of association between two variables on a scale from -1 to 1. Therefore, this is the best choice for this scenario.

Which Correlation Coefficient Should We Use If We Want to Find