What is the rationale for df = (r - 1)(k - 1)in conducting a chi-square test of independence for a contingency table with r rows and k columns?

Name: What is the rationale for df = (r - 1)(k - 1)in conducting a chi-square test of independence for a contingency table with r rows and k columns?
Brand: Quizplus
Rating: 4.8 (56 reviews)

Question

Quizplus · Accepted Answer

The Answer of What is the rationale for df = (r - 1)(k - 1)in conducting a chi-square test of independence for a contingency table with r rows and k columns?

What Is the Rationale for Df = (R - 1)(k