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LORENZ CURVE: In general, a diagram illustrating the degree of inequality and concentration for a group. This is accomplished by plotting the cumulative percentage of a total amount obtained by cumulative percentages of the group. A common use of the Lorenz curve is the distribution of income, in which the cumulative percentage of income is measured on the vertical axis and the cumulative percentage of the population is measured on the horizontal axis. Perfect equality is indicated by a 45-degree line (that is, 10% of the population has 10% of the income, 20% of the population has 20% of the income, etc.). The actual Lorenz curve inevitably lies below the 45-degree line. The extent that the Lorenz curve differs from the 45-degree line indicates the extent of inequality.

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GINI INDEX: One of the most common measures of income or wealth distributions. It indicates how equal, or unequal, income, wealth, or similar stuff is distributed among the population. If you happen to come across a Gini index, you'll see that it falls in the range of 0 to 1. A value of 0 tells you that the distribution is perfectly equal, that is, everyone has exactly the same amount of income, wealth, or whatever. A value of 1, however, tells you that the distribution is what we could call perfectly unequal, that is, one person has everything and everyone else has nothing.

     See also | income distribution | wealth distribution | income | wealth | third rule of inequality | equity | Lorenz curve |


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GINI INDEX, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2018. [Accessed: April 21, 2018].


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RENT SEEKING

The inclination of everyone who is alive and breathing to get as much extra income, wealth, profit, or satisfaction as they can. Rent, while technically considered the factor payment for the use of land resources, is also commonly used as a synonym for economic profit, for the acquisition of benefits above opportunity cost. Rent seeking is the entirely rational process of obtain as much "extra" as possible. In effect, rent seeking is nothing more than utility maximization. Efficiency problems can arise, however, when rent seeking is enhanced and enabled through market control, political influence, or actions of special interest groups.

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