Terri is intrigued about a possible relation between whether one is left-handed or right-handed and one's gender. Which correlation coefficient should Terri calculate to examine this possible relation?
A) phi coefficient
B) point-biserial correlation
C) Spearman rho
D) product-moment correlation coefficient

Question

Quizplus · Accepted Answer

The phi coefficient is used to measure the association between two categorical variables, such as left-handedness and gender. It is the most appropriate choice for examining the possible relation between these two variables. The point-biserial correlation is used when one variable is dichotomous (such as left-handedness) and the other is continuous, so it would not be appropriate in this case. The Spearman rho is used when both variables are ordinal, and the product-moment correlation coefficient is used when both variables are continuous, so neither would be appropriate in this case.

Terri Is Intrigued About a Possible Relation Between Whether One