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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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INELASTIC

The general relation between two variables in which relatively large changes in one variable (A) cause relatively small changes in another variable (B). In other words, large changes in variable A cause relatively small changes in variable B or the percentage change in variable B is smaller than the percentage change in variable A. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Inelastic is one of two general elasticity relations between two variables. The other is elastic.

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BLACK DISMALAPOD
[What's This?]

Today, you are likely to spend a great deal of time browsing through a long list of dot com websites seeking to buy either a coffee cup commemorating the first day of winter or a video game player. Be on the lookout for mail order catalogs with hidden messages.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"In order to create there must be a dynamic force, and what force is more potent than love."

-- Igor Stravinsky, violinist

LAD
Least Absolute Deviations
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