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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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MARKET-ORIENTED ECONOMY

A mixed economy that relies heavily on markets to answer the three questions of allocation, but with a modest amount of government involvement. While it is commonly termed capitalism, the term market-oriented economy is much more descriptive of the structure of the economy. The United States is the primary example of a market-oriented economy.

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Today, you are likely to spend a great deal of time watching infomercials hoping to buy either a computer that can play video games and burn DVDs or a black duffle bag with velcro closures. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"Do something wonderful; people may imitate it. "

-- Albert Schweitzer, theologian, physician

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