借助numpy的向量运算更快速
用python算方差可以借助numpy的向量运算来求更快速：importnumpynarray=numpy.array(nlist)sum1=narray.sum()narray2=narray*narraysum2=narray2.sum()mean=sum1/Nvar=sum2/N-mean**2...
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python numpy教程
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如何用python算方差 借助numpy的向量运算更快速
用python算方差可以借助numpy的向量运算来求更快速：importnumpynarray=numpy.array(nlist)sum1=narray.sum()narray2=narray*narraysum2=narray2.sum()mean=sum1/Nvar=sum2/N-mean**2...