一种基于众数的收入分配差距测度方法  

A New Calculating Method of Income Disparities Based on Mode Statistic

作　　者：田茂茜[1,2] 万亮[1] 虞克明[2,3] 

机构地区：[1]西安交通大学金禾经济研究中心 [2]石河子大学 [3](英)布鲁奈尔大学

出　　处：《数量经济技术经济研究》2015年第1期129-145,共17页Journal of Quantitative & Technological Economics

基　　金：全国统计科学研究计划项目"基于众数统计量的收入分配差距测度及其影响机制研究"(2013LY022);国家自然科学基金资助项目"贝叶斯离散分位数回归模型:理论;方法及应用"(11261048)的资助

摘　　要：为研究最低工资是否可以降低收入不平等程度,提出基于中位数与众数比值计算基尼系数的新算法。借助最低工资的截断效应和溢出效应理论,构建最低工资对工资收入分布的冲击作用模型,利用数值模拟方法分析最低工资对于混合基尼系数的微观影响过程。结果表明,最低工资可以通过减小单个分布基尼系数和众数差距降低混合基尼系数。代表最低工资执行力度的冲击系数越大,最低工资降低收入不平等程度的效率越高。In this paper, we propose a new calculating method of the Gini coefficient based on the ratio of the median statistic and the mode statistic. In order to analyze the underlying micro mechanism of the minimum wage to the Overall Gini coefficient, we develop an impact model of the minimum wage to the income distribution based on the theory of spike and spillover effects. According to the simulation results, we draw some meaningful conclusions. The minimum wage can lower the Overall Gini coefficient by reducing the Gini coefficient of the single income distribution and reducing the mode gap between these two income distributions. Moreover, the larger the impact coefficient which is on behalf of the enforcement of the minimum wage, the higher the efficiency of reducing the income inequality.

关 键 词：众数 基尼系数 最低工资 

分 类 号：F224.0[经济管理—国民经济]