两样本比较的秩和检验用T界值表的商榷——Wilcoxon秩和检验界值表的编制原理

ASSESSING CRITICAL VALUE TABLE FOR T IN THE WILCOXON RANK SUM TEST FOR TWO SAMPLES

对国内外几种工具表专著中,两样本比较的秩和检验用T界值表作了比较,其界值不尽一致。分析原因,是确定界值采用了两种不同的准则,以准则2的界值表更为合理。用实例介绍了秩和T的概率的计算方法。

The critical values for T in the Wilcoxon rank sum test for two samples which appear in well-known books printed at home and abroad were assessed. All critical values of T in these statistical books were found to be inconsistent with each other. The cause of the situation appeared to be that two rules for determining the critical value were applied. We think the second rule for determining the critical value is the more reasonable. The calculating probability of rank sum T value is introdced with examples.