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The Robin Hood index is a measure derived from the Lorenz curve.
Mathematically, the Robin Hood index for Lorenz curve 
is 
. This means that the index is derived by finding the largest vertical line, which can be drawn between a Lorenz curve for perfectly even distribution (e.g. of incomes) and the measured Lorenz curve. Theoretically the height of the rectangle surrounding the Lorenz curve is the greatest possible maximum. Therefore dividing the found line by the height of the rectangle yields a metric between 0% and 100%.
See also
External links
- Bruce P Kennedy, Ichiro Kawachi, Deborah Prothrow-Stith: Income distribution and mortality: cross sectional ecological study of the Robin Hood index in the United States, BMJ 1996 (April 20th);312:1004-1007
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- This page was last modified on 28 November 2008, at 09:55.
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