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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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TWO-SECTOR, TWO-MARKET CIRCULAR FLOW A simple circular flow model of the macroeconomy containing two sectors (business and household) and two markets (product and factor) that illustrates the continuous movement of the payments for goods and services between producers and consumers. The payment flow between the two sectors and two markets is conveniently divided into four segments representing consumption expenditures, gross domestic product, factor payments, and national income. More advanced models containing additional flow segments are two-sector, three-market circular flow; three-sector, three-market circular flow; and four-sector, three-market circular flow.
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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time touring the new suburban shopping complex hoping to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for deranged pelicans.
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The wealthy industrialist, Andrew Carnegie, was once removed from a London tram because he lacked the money needed for the fare.
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"Education is the ability to listen to almost anything without losing your temper or your self-confidence. " -- Robert Frost
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