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zhy · 2019年03月16日

问一道题:NO.PZ2015120204000014

问题如下图:

    

选项:

A.

B.

C.

解释:


 可否帮忙辨析一下,关于置信区间上下限的计算公式中,标准误什么时候需要除以根号n呢?

1 个答案

菲菲_品职助教 · 2019年03月18日

同学你好,这已经写了是标准误了,所以直接用就好了。如果给的是标准差,才要除以根号n,标准误是不用除的。

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