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如何用python算方差
更新时间: 2021-05-24 03:23:11  

用python算方差可以借助numpy的向量运算来求更快速:

import numpy

narray=numpy.array(nlist)

sum1=narray.sum()

narray2=narray*narray

sum2=narray2.sum()

mean=sum1/N

var=sum2/N-mean**2

关键词: 何用 python

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