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700 · 2017年10月21日

答案分析请帮我翻译一下,贝努力分布也有同样的规律吗?问一道题:NO.PZ2016062402000016 [ FRM I ]

问题如下图:
选项:
A.
B.
C.
D.
解释:
1 个答案

Shimin_CPA税法主讲、CFA教研 · 2017年10月21日

当x很大时,正态分布更趋近泊松分布。x在泊松分布中既是期望值又是方差,AB错。当np=x很大时,二项分布趋近泊松分布。

贝努力试验重复多次,分布也会趋近正态分布。

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