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The Gini coefficient of inequality is a measure of how uneven or unequal a distribution is.  The ratio varies between complete equality (0) and complete inequality (1).  The '''Gini index''' is the Gini coefficient multiplied by 100. It is commonly used to evaluate the distribution of incomes in an economy.

The Gini coefficient of inequality is a measure of how uneven or unequal a distribution is.  The value ranges from 0 (complete equality, i.e. everyone has the same income) to 1 (complete inequality, i.e. one person has all of a country's income).  The '''Gini index''' is the Gini coefficient multiplied by 100. It is commonly used to evaluate the distribution of incomes in an economy.

On a [[Lorenz diagram]], the Gini coefficient of inequality equals the area between the Lorenz curve and the diagonal line divided by the entire area that lies underneath the diagonal line.<ref>http://people.hofstra.edu/geotrans/eng/ch4en/meth4en/ch4m1en.html</ref>

On a [[Lorenz diagram]], the Gini coefficient of inequality equals the area between the Lorenz curve and the diagonal line divided by the entire area that lies underneath the diagonal line.<ref>http://people.hofstra.edu/geotrans/eng/ch4en/meth4en/ch4m1en.html</ref>