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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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MARGINAL COST The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.
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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time at an auction seeking to buy either a bookshelf that will fit in your closet or a birthday greeting card for your grandfather. Be on the lookout for slightly overweight pizza delivery guys.
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Lombard Street is London's equivalent of New York's Wall Street.
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"All things are difficult before they are easy." -- Thomas Fuller, Physician
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LRAC
Long Run Average Cost
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