教育对不同群体收入的影响

The Income Impact of Education on Different Groups of Labors

本文基于国家统计局“城调队“的中国城镇住户调查数据，采用基尼系数统计指针和分位数计量回归方法，对我国城镇不同群体的收入水平、收入差异、教育差异以及收入与教育之间的关系进行了实证研究。研究结果表明：我国城镇居民的收入差距呈现显著的扩大趋势；城镇居民收入差距扩大的主要因素可以归结为低收入群体的收入不平等；受教育程度越高的群体其收入差异的基尼系数越小；“弱收入能力群体“的教育收益率显著高于“强收入能力群体“的教育收益率。

Based on data from Chinese Urban Household Survey collected in 2005， employing Gini Coefficient， and Quantile Regression Method， this study has investigated statistically and econometrically the income level， income inequality， education inequality， and the relationship between education and income among different groups of people. The regression results and statistic estimates have found：First， the income inequality has shown a significant increasing trend since the beginning of 1990s. Second， the increasing income gaps attribute to the inequality within lowest income group. Third， the higher the averaged educational level of one group is， the smaller the income gap within its group is. Finally， the rate of return to education for the group with weaker ability to gin earnings is bigger than that for the group with stronger ability.