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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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TROUGH The transition of a business-cycle contraction to a business-cycle expansion. The end of a contraction carries this descriptive term of trough, or the lowest level of economic activity reached in recent times. A trough is one of two turning points. The other, the transition from expansion to contraction, is a peak. Turning points are important because they represent the transition from bad to good or good to bad.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store wanting to buy either a pair of gray heavy duty boot socks or a 50-foot blue garden hose. Be on the lookout for jovial bank tellers.
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This isn't me! What am I?
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
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"Defeat is simply a signal to press onward." -- Helen Keller, lecturer, author
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AER
American Economic Review
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