A chi-square test for independence has df = 3.What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?
A)4
B)6
C)8
D)9

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a chi-square test for independence is calculated as (rows - 1) * (columns - 1). Given df = 3, the possible combination is 4 categories (2x4 or 4x2), resulting in 8 cells.

A Chi-Square Test for Independence Has Df = 3