标题： 20-60-20规则 显示英文标题

标题： The 20-60-20 Rule

摘要： 在本文中，我们讨论了一个被称为20-60-20规则的经验现象。 它表示，如果我们根据某种任意的基准标准将人口分成三组，那么这个特定的比例暗示了一种平衡。 从实际角度来看，这种特征通常会导致有效的管理或控制。 我们提供了一个数学说明，证明了这一规则在许多现实世界情况中出现的合理性。 我们证明了对于任何可以用多元正态向量描述的人口，当考虑离散性和线性相关性测量时，这个固定比例会导致全局平衡状态。 显示英文摘要

摘要： In this paper we discuss an empirical phenomena known as the 20-60-20 rule. It says that if we split the population into three groups, according to some arbitrary benchmark criterion, then this particular ratio implies some sort of balance. From practical point of view, this feature often leads to efficient management or control. We provide a mathematical illustration, justifying the occurrence of this rule in many real world situations. We show that for any population, which could be described using multivariate normal vector, this fixed ratio leads to a global equilibrium state, when dispersion and linear dependance measurement is considered.