Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal.The sum of rankings and the sample size for each group are below.
The value of the test statistic is H = 0.68

Question

Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal.The sum of rankings and the sample size for each group are below.
  The value of the test statistic is H = 0.68

Quizplus · Accepted Answer

The Kruskal-Wallis test computes the test statistic H using the formula H = [(12/(N(N+1))) * ∑(R_i^2/n_i)] - 3(N+1), where N is the total sample size and R_i and n_i are the sum of ranks and sample size, respectively, in the ith group. The value of H is compared to a critical value derived from the chi-squared distribution with df = k-1, where k is the number of groups. Therefore, the sum of ranks and sample size for each group is not sufficient to determine the value of H, and it cannot be concluded whether the medians of the three populations are equal based on the information given. The answer is false.

Assume That a Kruskal-Wallis Test Is Being Conducted to Determine