Exhibit 13-7: Choose the index of correlation appropriate for use in each of the following.
Exhibit
-Refer to Exhibit 13-7.Aptitude test scores and GPA
A) Spearman rho
B) Pearson's r
C) Phi coefficient

Question

Quizplus · Accepted Answer

Since the variables being compared are both continuous (aptitude test scores and GPA), Pearson's r is the appropriate index of correlation. Spearman rho is used when at least one of the variables is ordinal, and Phi coefficient is used when both variables are dichotomous.

Exhibit 13-7: Choose the Index of Correlation Appropriate for Use