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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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FACTOR SUPPLY DETERMINANTS

Ceteris paribus influences, other than factor price, that shift the factor supply fall into three general categories: (1) market supply determinants, (2) market demand determinants, and (3) mobility. Comparable to any determinant, those falling into these three categories cause the factor supply curve to shift to a new location. An increase in factor supply is a rightward shift of the factor supply curve and a decrease in factor supply is a leftward shift.

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Today, you are likely to spend a great deal of time surfing the Internet looking to buy either a T-shirt commemorating the 2000 Presidential election or a really, really exciting, action-filled video game. Be on the lookout for the last item on a shelf.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
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