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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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SHORT-RUN PRODUCTION ALTERNATIVES A firm faces three production options in the short run based on a comparison between price, average total cost, and average variable cost. If price is greater than average total cost, a firm earns an economic profit by producing the quantity that equates marginal revenue with marginal cost. If price is less than average total cost but greater than average variable cost, a firm incurs an economic loss, but produces the quantity that equates marginal revenue with marginal cost. If price is less than average variable cost, a firm shuts down production in the short run, incurring an economic loss equal to total fixed cost.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area seeking to buy either a large, stuffed kitty cat or a cross-cut paper shredder. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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This isn't me! What am I?
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"In a decisive set, confidence is the difference. " -- Chris Evert, tennis champion
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WLLN
Weak Law of Large Numbers
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