TY - JOUR

T1 - Parametric decomposition of the Gini coefficient

T2 - How change of subgroup affect an overall inequality

AU - Hamada, Hiroshi

PY - 2005/12

Y1 - 2005/12

N2 - The purpose of this study is to analyze the relationship between parameters of subpopulation and the Gini coefficient of whole society. For this purpose, we introduce a parametric decomposition of the Gini coefficient under the condition that each income in a subpopulation is subject to the lognormal distribution. By this condition, the overall Gini coefficient can be expressed as a function of the parameters of subpopulation's distribution, that is μi and σi. Applications of the parametric decomposition are made to the household income distribution that consists of age-subpopulations in Japan.

AB - The purpose of this study is to analyze the relationship between parameters of subpopulation and the Gini coefficient of whole society. For this purpose, we introduce a parametric decomposition of the Gini coefficient under the condition that each income in a subpopulation is subject to the lognormal distribution. By this condition, the overall Gini coefficient can be expressed as a function of the parameters of subpopulation's distribution, that is μi and σi. Applications of the parametric decomposition are made to the household income distribution that consists of age-subpopulations in Japan.

KW - Decomposition of Gini coefficient

KW - Gini coefficient

KW - Income distribution

UR - http://www.scopus.com/inward/record.url?scp=33744724903&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33744724903&partnerID=8YFLogxK

M3 - Review article

AN - SCOPUS:33744724903

SN - 0913-1442

VL - 20

SP - 241

EP - 256

JO - Sociological Theory and Methods

JF - Sociological Theory and Methods

IS - 2

ER -