Which of the following tests is appropriate for nominal data if the problem objective is to compare two or more populations and the number of categories is at least 2? A) The z-test for one proportion,p,or difference of two proportions,p₁ - p₂. B) The chi-squared goodness-of-fitness test. C) The chi-squared test of a contingency table. D) All of these choices are true.

Question

Quizplus · Accepted Answer

The appropriate test for nominal data with at least two categories and the objective to compare two or more populations is the chi-squared test of a contingency table. Choice A is for comparing proportions, which is not relevant for this scenario. Choice B is for testing if the observed frequencies follow a specific distribution, which is also not relevant for this scenario. Therefore, the best choice is C, which is specifically designed for comparing nominal data.

Which of the Following Tests Is Appropriate for Nominal Data