期刊
ANNALS OF THE INSTITUTE OF STATISTICAL MATHEMATICS
卷 58, 期 1, 页码 93-100出版社
SPRINGER
DOI: 10.1007/s10463-005-0019-3
关键词
rank test; unbiasedness; two-sample problem; power curve; location parameter; beta distribution
This paper answers the long-standing question of whether the two-sided Wilcoxon rank test for equal sample sizes is unbiased against a location parameter family of distributions by giving a counterexample. It is also shown that the nonrandomized two-sided Wilcoxon test for equal sample sizes with the least positive significance level is unbiased.
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