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A teenager wears torn rubber boots in a muddy local market in Bac Ha, Viet Nam. As of 2005 figures, half the world population—more than 3 billion people–is estimated to live on less than USD 2.50 a day. Bac Ha, Viet Nam. UN Photo/Kibae Park.

Table of contents

Ungrouping Income Distributions: Synthesising Samples for Inequality and Poverty Analysis

We describe a new method of facilitating inequality and poverty analysis of grouped distributional data by allowing individual income observations to be reconstructed from any feasible grouping pattern. In contrast to earlier methods, our procedure ensures that the characteristics of the synthetic sample exactly match the reported values. The performance of the algorithm is evaluated first by using household survey records to compare true income observations with their synthetic counterparts, then by comparing the true and generated values of the Gini coefficient and other inequality indices. The results indicate that the new technique is capable of reproducing individual data from grouped statistics with a high degree of accuracy.
Publisher:
UNU-WIDER
Series:
WIDER Research Paper
Volume:
2008/16
Title:
Ungrouping Income Distributions: Synthesising Samples for Inequality and Poverty Analysis
Authors:
Anthony Shorrocks and Guanghua Wan
Publication date:
February 2008
ISSN Web:
1810-2611
ISBN 13 Web:
9789292300586
Copyright holder:
© UNU-WIDER
Copyright year:
2008
Keywords:
grouped data, income distribution, inequality, poverty
JEL:
C81, D31
Sponsor:
The governments of Denmark (Royal Ministry of Foreign Affairs), Finland (Ministry for Foreign Affairs), Norway (Royal Ministry of Foreign Affairs), Sweden (Swedish International Development Cooperation Agency — Sida) and the United Kingdom (Department for International Development).
Format:
online