A chi-square test for independence has df = 2.What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?
A)2
B)3
C)4
D)6

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a chi-square test for independence is calculated as (rows - 1) * (columns - 1). If df = 2, possible combinations could be a 2x3 or 3x2 matrix, which results in 6 total categories (cells).

A Chi-Square Test for Independence Has Df = 2