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MARKET STRUCTURE: The manner in which a market is organized, based largely on the number of firms in the industry. The four basic market structure models are: perfect competition, monopoly, monopolistic competition, and oligopoly. The primary difference between each is the number of firms on the supply side of a market. Both perfect competition and monopolistic competition have a large number of relatively small firms selling output. Oligopoly has a small number of relatively large firms. And monopoly has a single firm.
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ASSUMPTION An initial condition or statement of a model or theory that sets the stage for an analysis by abstracting from the real world. Assumptions are important to economic analysis. Some assumptions are used to simplify a complex analysis into more easily manageable parts. Other assumptions are used as control conditions that are subsequently changed to evaluate the consequences.
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BLACK DISMALAPOD [What's This?]
Today, you are likely to spend a great deal of time watching infomercials seeking to buy either a New York Yankees baseball cap or a solid oak entertainment center. Be on the lookout for telephone calls from long-lost relatives. Your Complete Scope
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The average bank teller loses about $250 every year.
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"The truth is not for all men, but only for those who seek it. " -- Ayn Rand, writer
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AMEX American Stock Exchange
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