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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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AVERAGE VARIABLE COST

Total variable cost per unit of output, found by dividing total variable cost by the quantity of output. When compared with price (per unit revenue), average variable cost (AVC) indicates whether or not a profit-maximizing firm should shut down production in the short run. Average variable cost is one of three average cost concepts important to short-run production analysis. The other two are average total cost and average fixed cost. A related concept is marginal cost.

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Today, you are likely to spend a great deal of time browsing through a long list of dot com websites trying to buy either one of those "hang in there" kitty cat posters or a velvet painting of Elvis Presley. Be on the lookout for fairy dust that tastes like salt.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
"Work is an extension of personality. It is achievement. It is one of the ways in which a person defines himself, measures his worth ‚ and his humanity. "

-- Peter Drucker, author

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