The empirical relationship between two variables measured at the interval level can be examined by:

Question

Quizplus · Accepted Answer

The Pearson correlation coefficient is appropriate for examining the relationship between two interval-level variables. It measures the strength and direction of the linear relationship between the two variables. The other options are not appropriate for interval-level variables. The Spearman rank correlation coefficient is used for ordinal data, chi-square is used for categorical data, and Cramer's V is a measure of association for nominal-level variables.

The Empirical Relationship Between Two Variables Measured at the Interval