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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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PEAK

The transition of a business-cycle expansion to a business-cycle contraction. The end of an expansion carries this descriptive term of peak, or the highest level of economic reached in recent times. A peak is one of two turning points. The other, the transition from contraction to expansion, is a trough. Turning points are important because they represent the transition from bad to good or good to bad.

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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time at a going out of business sale looking to buy either a coffee cup commemorating the first day of spring or a printer that works with your stockpile of ink cartridges. Be on the lookout for slow moving vehicles with darkened windows.
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Two and a half gallons of oil are needed to produce one automobile tire.
"Lord, where we are wrong, make us willing to change; where we are right, make us easy to live with. "

-- Peter Marshall, US Senate chaplain

LRAC
Long Run Average Cost
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