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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.
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UNDERGROUND ECONOMY Illegal and unreported market transactions and productive activity that escape the watchful eyes of official record keepers. By most estimates, a substantial amount of productive activity takes place in the underground economy of the United States. Of course, these are only estimates because such activity, by definition, goes unreported. If activity in the underground economy is added to official activity in the "overground" economy, then gross domestic product could be boosted by as much as 25 percent to 50 percent, or more. Inclusion of employment in the underground economy is also likely reduce the official unemployment rate by a few percentage points.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time searching for a specialty store hoping to buy either a remote controlled sports car with an air spoiler or semi-gloss photo paper that works with your neighbor's printer. Be on the lookout for high interest rates.
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This isn't me! What am I?
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
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"Ships are safe in harbor. But that is not what ships are for." -- Anonymous
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ITO
International Trade Organization
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