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HERFINDAHL INDEX: 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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MARGINAL REVENUE, MONOPOLISTIC COMPETITION The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopolistically competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopolistically competitive firm equates marginal revenue and marginal cost.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time at a going out of business sale looking to buy either 500 feet of telephone cable or a package of 4 by 6 index cards, the ones with lines. Be on the lookout for infected paper cuts.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"My father used to say to me, „Whenever you get into a jam, whenever you get into a crisis or an emergency . . .become the calmest person in the room and you'll be able to figure your way out of it. " -- Rudolph Giuliani
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Income, Nominal Gross National Product
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