When examining an association in which one variable is categorical and one is quantitative,which of the following statistical tests is likely to be used?
A) A t test
B) A phi coefficient
C) Point-biserial correlation
D) Either a or c
E) All of the above

Question

Quizplus · Accepted Answer

When examining an association between a categorical variable and a quantitative variable, either a t test or point-biserial correlation can be used. The choice between the two tests depends on the specific research question and the nature of the data. If the research question involves comparing means between the groups defined by the categorical variable, a t test is appropriate. If the research question involves determining the strength and direction of the association between the two variables, a point-biserial correlation is appropriate. A phi coefficient is appropriate for analyzing the association between two categorical variables.

When Examining an Association in Which One Variable Is Categorical