Sample size determination in the Mann–Whitney test

• Autorzy: Andrzej Kornacki , Andrzej Bochniak , Agnieszka Kubik-Komar
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Mann-Whitney test; sample size; empirical power

• Wydawca: De Gruyter Open
• Czasopismo: Biometrical Letters
• Rocznik: 2017
• Tom: 54
• Numer: 2
• Strony: 175-186

Daty

wydano

2017-12-20

online

2017-12-13

Twórcy

autor

Andrzej Kornacki

• ,

autor

Andrzej Bochniak

• ,

autor

Agnieszka Kubik-Komar

• ,

Identyfikatory

DOI

10.1515/bile-2017-0010