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
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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 -