…An index devised by the Italian C. Gini in 1936 to measure the inequality of income and wealth distribution. It is also called Gini's coefficient of concentration. When income y i is given in ascending order of income as ( y 1 , y 2 , …, y n ), the Gini coefficient G is defined as follows. In other words, the Gini coefficient is half the value obtained by considering the combinations of income ( y i , y j ) for all members and dividing the average amount of the difference (absolute value) by the average income μ. … *Some of the terminology that mentions "Gini, C." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…所得や資産の分布の不平等を計測するためにイタリア人ジニC.Giniが1936年に考案した一指標。ジニ集中指数Gini’s coefficient of concentrationともいう。所得yiが所得の低い順に(y1,y2,……,yn)で与えられているとき,ジニ係数Gはで定義された値である。すなわちジニ係数とは,所得の組合せ(yi,yj)をすべての構成員について考え,その差(絶対値)の平均額を平均所得μで除した値の半分である。… ※「Gini,C.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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