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Gini Index

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GINI Index
GINI index measures the extent to which the distribution of income or consumption expenditure among individuals or households within an economy deviates from a perfectly equal distribution. A Lorenz curve plots the cumulative percentages of total income received against the cumulative number of recipients, starting with the poorest individual or household. The GINI index measures the area between the Lorenz curve and a hypothetical line of absolute equality, expressed as a percentage of the maximum area under the line. Thus a GINI index of 0 represents perfect equality, while an index of 100 implies perfect inequality.

GINI of Income
A table containing the GINI indicator of income of Bangladesh over the years is given below: Year | National | Rural | urban | 1973-74 | .36 | .35 | .38 | 1981-82 | .39 | .36 | .41 | 1983-84 | .36 | .35 | .37 | 1985-86 | .38 | .36 | .37 | 1988-89 | .38 | .37 | .38 | 1991-92 | .39 | .36 | .40 | 1995-96 | .43 | .38 | .44 | 2000 | .45 | .39 | .50 | 2005 | .47 | .43 | .50 | 2010 | .46 | .43 | .45 |
Table: GINI of income for Bangladesh from 1973 to 2010

A graphical representation showing the comparative difference among national rural and urban GINI for income in Bangladesh is given below:

Figure: Income GINI index by rural urban area

GINI of Expenditure
A table containing the GINI indicator of Expenditure of Bangladesh over the years is given below: Year | National | Rural | Urban | 1991-1992 | .26 | .25 | .31 | 1995-1996 | .31 | .27 | .37 | 2000 | .33 | .28 | .37 | 2005 | .33 | .28 | .36 | 2010 | .32 | .27 | .34 |
Figure: GINI of Expenditure for Bangladesh from 1991 to 2010

A graphical representation showing the comparative difference among national rural and urban GINI for expenditure in Bangladesh is given below:

Figure: Expenditure GINI index by rural urban area

Comparison with US
From World Bank data (source: http://data.worldbank.org/indicator/SI.POV.GINI) we can see in 2010, the national GINI for Income Inequality in Bangladesh was .32 whereas for US (nationally) it was .411 then. If we compare the above data along with the rural and urban Expenditure GINI of Bangladesh in similar year in a graphical format, we get the below chart:

Figure: Comparison with US in terms of Expenditure GINI

Reference 1. Khan A. Matin, 2014, Income Inequality in Bangladesh, 19th Biennial Conference “Rethinking Political Economy of Development ” Of the Bangladesh Economic Association

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