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DI: The abbreviation for disposable income,which is the total income that can be used by the household sector for either consumption or saving during a given period of time, usually one year. This is the income left over after income taxes and social security taxes are removed and government transfer payments, like welfare, social security benefits, or unemployment compensation are added. Because consumption and saving are important to our economy for short-run stability and long-run growth, pointy-headed economists like to keep a close eye on disposable personal income. Disposable income is reported quarterly (every three months) in the National Income and Product Accounts maintained by the Bureau of Economic Analysis.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors hoping to buy either a black duffle bag with velcro closures or any book written by Isaac Asimov. Be on the lookout for high interest rates.
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
"I know the price of success; dedication, hard work and an unremitting devotion to the things you want to see happen. "

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CLT
Central Limit Theorem
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