楼主: 煮酒正熟
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职场上俩个题,看看大家啥思路 |
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没仔细看,以为每月1200呢。。。
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别纠结了,一回事。用统计黑话说,proportion test的算值追随df=1的开方分布。所谓df
=n的卡方分布,就是n个标准正态分布的变量的平方和的分布。
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