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ECONOMIC SYSTEM: The assorted institutions that society uses to answer the three basic questions of allocation and address the fundamental problem of scarcity. Another, more popular term for economic system is economy. An economy, or economic system, is the structural framework in which households, businesses, and governments undertake the production and consumption decisions that allocate limited resources to satisfy unlimited wants and needs.

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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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Today, you are likely to spend a great deal of time touring the new suburban shopping complex wanting to buy either an AC adapter that won't fry your computer or a case for your designer sunglasses. Be on the lookout for telephone calls from former employers.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"The greatest things ever done on Earth have been done little by little. "

-- William Jennings Bryan

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