Concerning the Kruskal–Wallis test, the test statistic follows a chi-square distribution with\(\style{font-family:Times New Roman;}{k-1}\)degrees of freedom if

*H*_{0}is true and:▸

\(\style{font-family:Times New Roman;}{n\geq30}\).

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\(\style{font-family:Times New Roman;}{k\geq5}\).

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\(\style{font-family:Times New Roman;}{n_i\geq20\;\forall\;i}\).

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\(\style{font-family:Times New Roman;}{k=3}\). and\(\style{font-family:Times New Roman;}{n_i\geq6\;(i=1,\;2,\;3)}\)