The Poverty Gap Index of Bangladesh

The Poverty Gap Index: the mean proportionate poverty gap in the population, where the poverty gap (Gn) is the poverty line (z) less actual income (Yi) for poor individuals (the non poor have a zero poverty gap). Some think of this measure as the per capita cost of eliminating poverty (relative to the poverty line), through perfectly targeted transfers to the poor, in the absence of transactions costs and disincentive effects