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简要说明在对两组数据差异程度进行比较时 , 能否直接比较两组数据的标准差 .
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简要说明在对两组数据差异程度进行比较时 , 能否直接比较两组数据的标准差 .
时间：2022-04-02 18:18
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桂林理工大学
工程管理
专升本
应用统计学
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略
当对比的两个事物是同属性，并且平均水平相同时，可以直接比较两组数据的标准差。 在两组数据属性不同时，或平均水平不等时，需要通过计算离散系数说明其平均数的代表性强弱。
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