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甲、乙两个生产车间加工相同的零件,甲车间工人日加工零件的均值为 150 件,标准差为 13.2 件,乙车间工人日加工零件的分布如下;

ex_1318428048853_0.jpg

计算乙车间日加工零件的均值及标准差,并比较甲、乙两个车间日加工零件的离散程度。

(写出公式、计算过程、结果保留2为小数)

问答题
2022-04-02 18:18
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正确答案

试题解析

ex_1318428114503_0.jpg

ex_1318428145066_0.jpg

所以,乙车间日常零件数离散程度小于甲车间。


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