怎么计算多个数值的方差

Question

如何在python中定义一个variance函数来计算多个数值的方差

Answer 1

按你的描述写了个例子，你参考一下：

from statistics import mean
def variance(data):
    data_pow = [pow(d-mean(data),2) for d in data]
    result = sum(data_pow)/len(data)
    return result
data = [1,3,5,6,7,8,9,9,0,1,2,12,3,1]
print(variance(data))

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