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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, REVENUE DIVISION The marginal approach to analyzing a perfectly competitive firm's short-run profit maximizing production decision can be used to identify the division of total revenue among variable cost, fixed cost, and economic profit. The U-shaped cost curves used in this analysis provide all of the information needed on the cost side of the firm's decision. The demand curve facing the firm (which is also the firm's average revenue and marginal revenue curves) provides all of the information needed on the revenue side.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages hoping to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for slow moving vehicles with darkened windows.
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This isn't me! What am I?
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A half gallon milk jug holds about $50 in pennies.
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"It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things. " -- Elinor Smith, aviator
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IPUMS
Integrated Public Use Microdata Series
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