The degrees of freedom for the chi-square test for independence is
A)the number of categories minus one.
B)the number of columns minus one multiplied by the number of rows minus one.
C)the total number of category levels minus one.
D)the number of people minus the number of cells.

Question

Quizplus · Accepted Answer

The degrees of freedom for the chi-square test for independence is calculated by multiplying the number of columns minus one by the number of rows minus one. This is because the test assesses whether two categorical variables are independent of each other, and the degrees of freedom reflect the number of independent elements in the data. The total number of category levels (option C) and the number of people minus the number of cells (option D) are not relevant to determining the degrees of freedom in this context. The number of categories minus one (option A) may apply in some cases, but not in the specific case of the chi-square test for independence.

The Degrees of Freedom for the Chi-Square Test for Independence