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	Duncan Socioeconomic Index	Gini Coefficient
Odbor	Sociology	Sociology
Rodina	Process / pipeline	Process / pipeline
Rok vzniku	1961	1912
Tvorca	Otis Dudley Duncan	Corrado Gini
Typ	Composite occupational status score from education and income	Scalar measure of statistical dispersion / inequality
Pôvodný zdroj	Duncan, O. D. (1961). A socioeconomic index for all occupations. In A. J. Reiss Jr. (Ed.), Occupations and Social Status (pp. 109–138). Free Press of Glencoe.	Ceriani, L., & Verme, P. (2012). The origins of the Gini index: extracts from Variabilità e Mutabilità (1912) by Corrado Gini. The Journal of Economic Inequality, 10(3), 421–443.
Ďalšie názvy	Duncan SEI, socioeconomic index for occupations, SEI score, Duncan's index	Gini index, Gini ratio, Gini concentration ratio, G
Príbuzné	5	5
Zhrnutie	The Duncan Socioeconomic Index (SEI), created by Otis Dudley Duncan in 1961, assigns each occupation a socioeconomic status score derived from the education and income of its incumbents. Duncan calibrated the score by regressing the prestige ratings of a limited set of occupations on the percentage of incumbents with high education and high income, then used that equation to predict a status score for every occupation in the census. The SEI thus extends a small number of prestige ratings to the entire occupational structure on a 0–100 scale.	The Gini coefficient is the most widely used single-number summary of inequality in a distribution such as income or wealth. Introduced by the Italian statistician Corrado Gini in 1912, it equals twice the area between the Lorenz curve and the line of perfect equality, ranging from 0 when everyone has the same amount to a maximum approaching 1 when one unit holds everything.