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LZ,举一个例子,比如某校 10名女生为提高体能参加了某健身房的训练,训练前后她们的心率分别为:
97 85 77 101 83 95 100 79 90 70(训练却)
69 75 70 93 80 79 86 77 83 73(训练后)
问题:这些女生们的体能(心率)训练前后是否明显改善?
(上面的例子就是典型的 配对样本,仅供 LZ 参考,谢谢!)
bisample t-test, or nonparameter test will be suitable for it
而proc univariate用的秩和检验,是非参检验,具有更强的势能,不一样的。
I doubt that signed rank test has more power than t test since t test is based on some assumpations. Moreover, many people think that, signed test points to median but t test points to mean.