帕累托法则

（重定向自帕雷托法则

经济学

1992年的“联合国开发计划署报告”载有一个将不平等现象视为非常明显和易于理解的形式，即所谓的“香槟杯”效应[6] 其中显示全球收入分配非常不平衡，全球最富有的20％的人口控制着世界收入的82.7％。[7]

数学笔记

64/4相关性也意味着4％至64％之间的32％“公平”面积，其中前20％（16％）的80％下降80％（上升20％）（下降了16％）涉及相应的上下底部效应（32％）。这也大致符合上述世界人口表，其中第二个20％控制了12％的财富，而最高的20％（可能）控制了16％的财富

平等措施

基尼系数和胡佛指数

${\displaystyle H=G=|2A-1|=|1-2B|\,}$
${\displaystyle A:B=\left({\frac {1+H}{2}}\right):\left({\frac {1-H}{2}}\right)}$

Theil 指数

${\displaystyle T_{T}=T_{L}=T_{s}=2H\,\operatorname {artanh} (H).\,}$

参考文献

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