The calculation of the df for the χ² test of independence is A)r x c - 1. B)(r-1)(c-1). C)(r-c)n. D)r x c.

Question

Quizplus · Accepted Answer

The correct formula to calculate the degrees of freedom for a χ² test of independence is (r-1)(c-1), where r represents the number of rows and c represents the number of columns in the contingency table. This formula takes into account the constraints imposed by the row and column totals, and is used to determine the critical values for the chi-square distribution. Therefore, the best choice is B.

The Calculation of the Df for the χ2 Test of Independence

The Calculation of the Df for the χ² Test of Independence