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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.
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MONEY FUNCTIONS Any item used as money in an economy automatically takes on four basic functions: (1) medium of exchange, (2) unit of account, (3) store of value, and (4) standard of deferred payment. While "buying and selling" means that money is THE medium of exchange, and by far THE most important function of money, money also performs unit of account, store of value, and standard of deferred payment functions.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area looking to buy either a lighted magnifying glass or a small, foam rubber football. Be on the lookout for the happiest person in the room.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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"The time your game is most vulnerable is when you're ahead; never let up. " -- Rod Laver, Tennis player
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PTA
Preferential Trade Agreement
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