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)four
B)six
C)eight
D)nine

Question

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)​four
B)​six
C)​eight
D)​nine

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 combinations of rows and columns that satisfy this are 2x4 or 4x2, which results in a total of 8 categories (cells).

A Chi-Square Test for Independence Has Df = 3