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何謂 Mann-Whitney test
何謂 Mann-Whitney test知道ㄉ人可以告訴我嗎越詳細越好謝謝
- Anonymous2 decades agoFavorite Answer
(Non-parametric independent two-group comparisons)
Definition: A non-parametric test (distribution-free) used to compare two independent groups of sampled data.
Assumptions: Unlike the parametric t-test, this non-parametric makes no assumptions about the distribution of the data (e.g., normality).
Characteristics: This test is an alternative to the independent group t-test, when the assumption of normality or equality of variance is not met. This, like many non-parametric tests, uses the ranks of the data rather than their raw values to calculate the statistic. Since this test does not make a distribution assumption, it is not as powerful as the t-test.Source(s): http://www.texasoft.com/winkmann.html