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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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PERFECT COMPETITION, FACTOR MARKET ANALYSIS

The analysis of a factor market characterized by perfect competition indicates that each buyer maximizes profit by equating marginal revenue product to the factor price. This achieves an efficient allocation of resources and provides a benchmark for analyzing other factor market structures, including monopsony, monopoly, and bilateral monopoly.

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PINK FADFLY
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Today, you are likely to spend a great deal of time lost in your local discount super center wanting to buy either a T-shirt commemorating the first day of spring or a coffee cup commemorating last Friday (you know why). Be on the lookout for cardboard boxes.
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Two and a half gallons of oil are needed to produce one automobile tire.
"The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy."

-- Martin Luther King, Jr.

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