正态分布的期望和方差

ZhangJiQun&MXP 发布时间：2021-10-26 18:46:55 ，浏览量：0

正态分布来源

正态分布

正态分布来源

高尔顿钉板中，每一个小珠子下滚的时候，撞到柱子就会随机的向左走或者向右走。然后一个小珠子一路滚下来会选择多次方向，最终的分布就会接近正态分布。

关键点在于，一个事情经过多个随机的因素的影响，结果似乎就是正态分布。

实际上人的身高就是符合正态分布的。2017年我国18岁及以上成年男性平均身

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正态分布的期望和方差

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