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Topic: Gini index


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  Gini coefficient - Wikipedia, the free encyclopedia
The Gini coefficient is a measure of inequality of a distribution, defined as the ratio of area between the Lorenz curve of the distribution and the curve of the uniform distribution, to the area under the uniform distribution.
The Gini index is the Gini coefficient expressed as a percentage, and is equal to the Gini coefficient multiplied by 100.
The Gini coefficient is defined as a ratio of the areas on the Lorenz curve diagram.
en.wikipedia.org /wiki/Gini_coefficient   (1722 words)

  
 ipedia.com: Gini coefficient Article   (Site not responding. Last check: 2007-10-23)
The Gini coefficient is a number between 0 and 1, where 0 means perfect equality (everyone has the same income) and 1 means perfect inequality (one person has all the income, everyone else has nothing).
While the Gini coefficient is mostly used to measure income inequality, it can be used to measure wealth inequality as well - though it requires nobody to have a negative net wealth.
The Gini coefficient is calculated using areas on the Lorenz curve diagram.
www.ipedia.com /gini_coefficient.html   (243 words)

  
 The World Factbook 2004 -- Field Listing - Distribution of family income - Gini index
This index for an economy is calculated from the Lorenz curve, in which cumulative family income is plotted against the number of families arranged from the poorest to the richest.
The index is the ratio of (a) the area between a country's Lorenz curve and the 45 degree helping line to (b) the entire triangular area under the 45 degree line.
The more nearly equal a country's income distribution, the closer its Lorenz curve to the 45 degree line and the lower its Gini index, e.g., a Scandinavian country with an index of 25.
www.brainyatlas.com /fields/2172.html   (176 words)

  
 NationMaster - Statistics > Distribution of family income > Gini index by country   (Site not responding. Last check: 2007-10-23)
This index measures the degree of inequality in the distribution of family income in a country.
The index is calculated from the Lorenz curve, in which cumulative family income is plotted against the number of families arranged from the poorest to the ric
DEFINITION: This index measures the degree of inequality in the distribution of family income in a country.
www.nationmaster.com /graph-T/eco_dis_of_fam_inc_gin_ind   (352 words)

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