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基尼系数测算本身并不复杂,然而由于方法对于数据要求高,传统测算方法无法在实证中应用,而现有文献采用的间接估计方法会导致结果与真实情况存在很大的估计偏差。本文的贡献在于通过中国健康与营养调查(CHNS)的个人实际总收入数据进行研究,弥补传统基尼系数测算方法的实证空白。同时,对基尼系数估计方法进行适当改进,首次在估计系数的同时可以得出估计标准误和置信区间,将这种方法应用于我国城乡基尼系数计算,并提出相关建议。
The calculation of the Gini coefficient itself is not complicated. However, since the method requires high data, the traditional calculation method can not be applied in the empirical study. However, the indirect estimation method used in the existing literature leads to great estimation bias between the result and the real situation. The contribution of this paper is to examine the empirical blank of the traditional method of Gini coefficient calculation based on the data of China’s total health and nutrition survey (CHNS). At the same time, the Gini coefficient estimation method is properly improved. For the first time, the estimated standard errors and confidence intervals can be obtained while estimating the coefficients. This method is applied to calculate the Gini coefficient of urban and rural areas in our country and the related suggestions are put forward.