If two variables each contain dichotomous response options, the following correlation should be used to examine the strength of their relationship:
A) Pearson correlation
B) point-biserial corelation
C) Fisher's r
D) Phi

Question

Quizplus · Accepted Answer

When both variables contain dichotomous response options, the best correlation to use is Phi. The Phi coefficient is calculated by using the same formula as the Pearson correlation coefficient, but it is specifically designed for use with categorical data.

If Two Variables Each Contain Dichotomous Response Options, the Following