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EIGHT-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the eight largest firms in the industry. This is one of two common concentration ratios. The other is the four-firm concentration ratio. The eight-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the eight largest firms in the industry.

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AVERAGE REVENUE CURVE

A curve that graphically represents the relation between average revenue received by a firm for selling its output and the quantity of output sold. Because average revenue is essentially the price of a good, the average revenue curve is also the demand curve for a firm's output. The average revenue curve for a firm with no market control is horizontal. The average revenue curve for a firm with market control is negatively sloped.

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Today, you are likely to spend a great deal of time searching for rummage sales seeking to buy either a set of luggage without wheels or a how-to book on wine tasting. Be on the lookout for pencil sharpeners with an attitude.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
"It is not the straining for great things that is most effective; it is the doing of the little things, the common duties, a little better and better."

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