If you wanted to compute the correlation between two ordinal-level variables, which type of correlation should you use?
A) Point biserial
B) Phi
C) Spearman rank
D) Pearson

Question

Quizplus · Accepted Answer

The Spearman rank correlation coefficient is used to measure the strength and direction of the relationships between two ordinal-level variables. It is based on the ranks of the values rather than the raw data, and therefore it is appropriate for non-parametric data. The other correlations (point biserial, phi, and Pearson) are appropriate for nominal or continuous data.

If You Wanted to Compute the Correlation Between Two Ordinal-Level