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 chi-squared test of a contingency table is appropriate for nominal data with at least two categories when comparing two or more populations. The z-test for one proportion or difference of two proportions is used for comparing proportions for two populations, while the chi-squared goodness-of-fit test is used to compare observed frequencies with expected frequencies in a single population. Therefore, option C is the best choice for the given objectives.

Which of the Following Tests Is Appropriate for Nominal Data