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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is a measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.
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PERFECT COMPETITION, EFFICIENCY Perfect competition is an idealized market structure that achieves an efficient allocation of resources. This efficiency is achieved because the profit-maximizing quantity of output produced by a perfectly competitive firm results in the equality between price and marginal cost. In the short run, this involves the equality between price and short-run marginal cost. In the long run, this is seen with the equality between price and long-run marginal cost at the minimum efficient scale of production.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time at a dollar discount store trying to buy either a video camera with stop action features or one of those memory foam pillows. Be on the lookout for attractive cable television service repair people.
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This isn't me! What am I?
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The average bank teller loses about $250 every year.
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"It is only our deeds that reveal who we are. " -- Carl Jung, psychiatrist
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OCC
Options Clearing Corporation
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