Journal
COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION
Volume 51, Issue 1, Pages 266-279Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/03610918.2019.1649424
Keywords
Jeffreys divergence measure; Kullback-Liebler divergence measure; power comparison; ranking method
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Funding
- JSPS KAKENHI [JP18K11199]
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This study modified a nonparametric two-sample test statistic using a ranking method and derived the exact critical value for small sample sizes. Simulations were used to investigate the power of the proposed test statistic for the location alternative and different distributions under small sample sizes.
Nonparametric two-sample tests are important statistical procedures in many scientific fields. The test statistic has been derived from the Kullback-Liebler divergence between two empirical distribution functions. This study modifies a nonparametric two-sample test statistic using a ranking method. The modified test statistic is shown to be based on the Jeffreys divergence measure. The exact critical value of the proposed test statistic is derived for small sample sizes. Simulations are used to investigate the power of the proposed test statistic for the location alternative and for any difference between distributions, with various population distributions, for small sample sizes.
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