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@Libigmao
均身高169cm+不知道来源的均长度12cm=181cm
那么加值不到180cm的应该有近一半(×

@acme 嚯你这么一说,真是两个平均值,不过不知道后者的标准差是多少,可以供各位男性知道自己到底是不是强者(

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