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Z检验 #26

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@Frank-LSY

利用服从标准正态分布统计量的检验方法成为U检验

  • 总体标准差已知或样本容量大于30,比较两个样本的均值是否有显著性的差异,
    image
  • 总体标准差已知或样本容量大于30,比较某个总体的均值与某个常数是否有显著性的差异,
    image

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