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《Statistics & Decision》 2018-17
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Comparative Study of Inequality Measurement of Canberra Index and Gini Coefficient

Han Xiulan;Zhang Nan;School of Statistics, Shanxi University of Finance and Economics;  
The Canberra index is a new method to measure inequality. From the perspective of comparison with the traditional Gini coefficient, this paper systematically discusses the Canberra index in terms of the sensitivity of the measurement results to different groups, the dynamic characteristics of the curve, a series of axiomatic characteristics satisfying the index, and the resolvability. And then the paper uses CFPS micro survey data, Canberra index and Gini coefficient to measure and decompose the inequality of Chinese household net income per capita. The study results show that in terms of disadvantaged groups in society, the Gini coefficient may underestimate the inequality differences among groups; compared with the Gini coefficient, the Canberra index has better performance and is more sensitive to the income gap of low-income groups; compared with Lorentz curve, the Canberra curve can show the dynamic changes of inequality more detailedly, which is more suitable for analyzing the inequality of low-income groups and related policy effects.
【Fund】: 国家社会科学基金一般项目(15BTJ012)
【CateGory Index】: F224;F124.7
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