Book1_Ch09_Page6 代码5与正文有出入
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AwayGithub commented
正文中说“第一个方差相当于粽子方差，第二个方差相当于样本无偏方差”。
但代码中第二个方差ddof为0，第一个方差ddof为1才是样本无偏方差。
此外，我没有搜索到“粽子方差”这个名词。是指ddof=0时的方差吗？
Visualize-ML commented
请麻烦具体说明，谢谢你！
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AwayGithub commented
不好意思，这里应该没有问题，是我想错了
不过“粽子方差”应为“总体方差的无偏估计”