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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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SLOPE, PRODUCTION POSSIBILITIES CURVE

The numerical value of the slope of the production possibilities curve, which illustrates the alternative combinations of two goods that an economy can produce with given resources and technology, is the opportunity cost of producing the good measured on the horizontal axis.

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Today, you are likely to spend a great deal of time searching for rummage sales looking to buy either a replacement remote control for your television or a replacement nozzle for your shower. Be on the lookout for malfunctioning pocket calculators.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
"Success without honor is an unseasoned dish; it will satisfy your hunger, but it won't taste good. "

-- Joe Paterno, Football coach

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