python威氏符号秩次检验（Wilcoxon Signed-Rank Test）

Posted 2021-08-28 Data+Science+Insight

python威氏符号秩次检验（Wilcoxon Signed-Rank Test）

1、Wilcoxon Signed Rank Test

Wilcoxon有符号秩检验(也称为Wilcoxon有符号秩和检验)是一种非参数检验。当统计数据中使用“非参数”一词时，并不意味着您对总体一无所知。这通常意味着总体数据没有正态分布。如果两个数据样本来自重复观察，那么它们是匹配的。利用Wilcoxon Signed-Rank检验，在不假设数据服从正态分布的前提下，判断出相应的数据总体分布是否相同如果数据对之间的差异是非正态分布的，则应使用Wilcoxon有符号秩检验。

The Wilcoxon signed rank test (also called the Wilcoxon signed rank sum test) is a non-parametric test. When the word “non-parametric” is used in stats, it doesn’t quite mean that you know nothing about the population. It usually means that you know the population data does not have a normal distribution. The Wilcoxon signed rank test should be used if t