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二项分布和超几何分布的期望和方差公式证明
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大魔法师 十一级
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Floor 1 Posted at: 5/17/26 15:26
一点证明~
二项分布的期望公式推导是书上给的。
超几何分布的期望推导灵感,来源于网上看到的“发现内在的超几何分布”的方式(原文:http://xhslink.com/o/1bNKwH9S1lT
两个方差的公式和其他部分都是自己推的,诶嘿~
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大魔法师 十一级
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Floor 2 Posted at: 5/17/26 15:26
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大魔法师 十一级
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Floor 3 Posted at: 5/17/26 15:27
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