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MARKET SHARE: The fraction of an industry's total sales accounted for by a single business. In general, market share is a "first-guess" indicator of a firm's market control. If, for example, a company has a market share of 100 percent (that is, a monopoly), then you can rest assured it has a substantial amount of market control. A company with a 25 percent market share has less, but still notable, market control. In fact, when you get right down to the bottom line, the phrase "market share" is only worth mentioning for oligopolistic firms with a significant degree of market control. There really is no market control for a monopolistically competitive firm with a 0.00000001 percent market share.

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AVERAGE PRODUCT CURVE

A curve that graphically illustrates the relation between average product and the quantity of the variable input, holding all other inputs fixed. This curve indicates the per unit output at each level of the variable input. The average product curve is one of three related curves used in the analysis of the short-run production of a firm. The other two are total product curve and marginal product curve.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for slightly overweight pizza delivery guys.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"And while the law of competition may be sometimes hard for the individual, it is best for the race, because it ensures the survival of the fittest in every department. "

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