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Tutt Library Research Guides
Tools for Measuring Inequatity
The Gini Index or the Gini coefficient is the most popular tool used to
calculate inequality by economists.
The 20:20 ratio compares income of the top twenty percent of the population in a given area to the bottom twenty percent of the group.
See also: http://www.equalitytrust.org.uk/resources2/spirit-level/methods
The Theil index is a statistic used to measure economic inequality that borrows from information theory.
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