Sample size determination in the Mann-Whitney test

Abstrakt

This paper discusses the problem of determining the number of observations necessary to apply the nonparametric Mann–Whitney test. We describe the method given by Noether (1987) for determining a sample size which guarantees that the Mann–Whitney test at a given significance level α has a predetermined power 1–β. The presented theory is tested by calculating the empirical power in computer simulations. The paper also raises the issue of the method of rounding the determined sample size to an even number when the sample is divided into two equinumerous subsamples.

Autorzy

artykuł
Biometrical Letters
Angielski
2017
54
2
175-186
otwarte czasopismo
CC BY-NC-ND Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 4.0
ostateczna wersja opublikowana
w momencie opublikowania
2017-12-13
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