Question

To decide whether two variables of a population are associated, we usually need to resort to inferential methods such as the chi-square independence test. Why?

Short answer

Since the data for the entire populaton is not usually variable, so we need to resort to inferential methods such as chi-square independent test.

Step-by-step solution

Step 1. Given Information.

Two variables of a population are associated.

Step 2. Explanation.

Since the data for the entire populaton is not usually variable, so we need to resort to inferential methods such as chi-square independent test.