4027 统计学之真实的谎言 episode artwork

EPISODE · Jan 22, 2022 · 1H 16M

4027 统计学之真实的谎言

from 思考盒子

辛普森悖论为英国统计学家E.H.辛普森于1951年提出的悖论在某个条件下的两组数据,分别讨论时都会满足某种性质,可是一旦合并考虑,却可能导致相反的结论。我们举个简单例子某国外一所高校的录取情况大家从表格里可以看到,如果只看整体录取率,那么男生的录取率是68.75%,女生的是56.52%。不求甚解的话,一般人肯定会得出这样的结论——女生被歧视了。打算申请这所大学的女生要是看到这样的数据,八成肺都气炸了。别急,现在把上面的数据按照院系拆分,再来看看每个院的录取率(假设只有这两个院系)。我们明显的发现,当我们分别对各院系进行分析时,女生的录取率明显高于男生,很显然这跟上面的结论完全相悖呀!

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4027 统计学之真实的谎言

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