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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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MACROECONOMIC MARKETS

Three sets of markets that make up the macroeconomy--product, financial, and resource--which exchange the three primary types of macroeconomic commodities--gross production, legal claims, and factor services. The four macroeconomic sectors--household, business, government, and foreign--interact through these three sets of markets. The primary objective of macroeconomic theories is to explain activity that takes place in these three sets of markets.

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APLS

RED AGGRESSERINE
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Today, you are likely to spend a great deal of time searching for a specialty store wanting to buy either a package of blank rewritable CDs or yellow cotton balls. Be on the lookout for defective microphones.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"The time your game is most vulnerable is when you're ahead; never let up. "

-- Rod Laver, Tennis player

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Unfair Trade Practice
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