A census reporter is trying to determine which of six countries has the largest city population, that is, the greatest concentration of population in urban areas.He is using ordinal data for all the cities in each of the countries, ranked from largest to smallest for city population.To compare the countries based on city population he should use a:
A) Kruskal-Wallis H test.
B) Mann-Whitney U test.
C) Wilcoxon signed-rank test.
D) one-way ANOVA.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis H test is used to compare the medians of two or more ordinal groups, making it the most appropriate choice for comparing the city populations between multiple countries. The Mann-Whitney U test is used for comparing two ordinal groups, while the Wilcoxon signed-rank test is used for comparing paired ordinal data. The one-way ANOVA is used for comparing means between multiple groups, which is not appropriate for ordinal data.

A Census Reporter Is Trying to Determine Which of Six