A chi-square test for independence is being used to evaluate the relationship between two variables.If the test has df = 3,what can you conclude about the two variables?
A)One variable consists of 2 categories and the other consists of 3 categories.
B)One variable consists of 2 categories and the other consists of 4 categories.
C)Both variables consists of 2 categories.
D)Both variables consists of 3 categories.

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a chi-square test for independence is calculated as (r - 1) * (c - 1), where r is the number of rows (categories of one variable) and c is the number of columns (categories of the other variable). If df = 3, then one possible configuration is (2 - 1) * (4 - 1) = 1 * 3 = 3, which corresponds to one variable having 2 categories and the other having 4 categories.

A Chi-Square Test for Independence Is Being Used to Evaluate