What is the formula for the Kruskal-Wallis H test?
A) $\left[ \frac { 12 } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) ^ { 2 } \right]$
B) $\left[ \frac { 12 } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) \right]$
C) $\left[ \sum n ( M - G M ) ^ { 2 } \right]$
D) $\left[ \frac { N } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) \right]$

Question

Quizplus · Accepted Answer

The correct formula for the Kruskal-Wallis H test is $\left[ \frac { 12 } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) ^ { 2 } \right]$, where N is the total number of observations across all groups, n is the number of observations in each group, M is the mean rank of each group, and GM is the grand mean rank of all observations. This formula is used to calculate the H statistic in the Kruskal-Wallis test, which is a non-parametric method for testing whether samples originate from the same distribution.

What Is the Formula for the Kruskal-Wallis H Test? A) [12N(N+1)][∑n(M−GM)2]\left[ \frac { 12 } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) ^ { 2 } \right][N(N+1)12​][∑n(M−GM)2]

What Is the Formula for the Kruskal-Wallis H Test?
A) $\left[ \frac { 12 } { N ( N + 1 ) } \right] \left[ \sum n ( M - G M ) ^ { 2 } \right]$