Estimating Lorenz Curve of Income in China by Cubic Spline InterpolationYing Liang1, Jiaxu Zhang2*, Dandan Jia2, Kungui Zhang2, Qiang Li2 and Xuezhang Liang2
- Corresponding Author:
- Jiaxu Zhang
Mathematics School, Jilin University, Changchun, Jilin, 130012, P.R. China
E-mail: [email protected]
Received: 29/08/2015 Accepted: 20/11/2015 Published: 30/11/2015
In this paper, we use a kind of cubic-spline-interpolation to approximate the Lorenz curves of urban and rural area in China, respectively. According to the Gini index reported by State Statistics Bureau of China in January 2014, we aggregate the Lorenz curves of urban and rural area in China, and obtain the national Lorenz curves of whole China from 2003 to 2013.