Under what circumstances is the point-biserial correlation used?
A)in the same circumstances when a repeated-measures t test would be used
B)when X consists of regular, numerical scores but Y is dichotomous
C)when both X and Y are dichotomous variables
D)when both X and Y are measured on an ordinal scale (ranks)

Question

Under what circumstances is the point-biserial correlation used?​
A)​in the same circumstances when a repeated-measures t test would be used
B)​when X consists of regular, numerical scores but Y is dichotomous
C)​when both X and Y are dichotomous variables
D)​when both X and Y are measured on an ordinal scale (ranks)

Quizplus · Accepted Answer

Point-biserial correlation is used when one variable is continuous (numerical) and the other variable is dichotomous. Therefore, choice B is the correct option. The point-biserial correlation can help determine the strength and direction of the relationship between these two types of variables.

Under What Circumstances Is the Point-Biserial Correlation Used?​

Under What Circumstances Is the Point-Biserial Correlation Used?