Can a single indicator measure both attainment and shortfall inequality?
When a distribution can be described either in terms of attainment or in terms of shortfall, the classical inequality measures appear to be one-sided. I show that it is possible to find indicators which simultaneously measure attainment and shortfall inequality. I derive one indicator belonging to the Gini family, and another belonging to Coefficient of Variation family. I also indicate how they are connected to other measures.
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