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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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UTIL

A hypothetical unit of measurement of utility that is commonly used by economists to present hypothetical information about utility and consumer demand theory. The util measurement unit was developed as a convenient way to illustrate and discuss concepts such as total utility, marginal utility, and the law of diminishing marginal utility. However, because utility is not a measurable characteristic, the util does represent an actual unit of measurement, such as inches or pounds.

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APLS

BROWN PRAGMATOX
[What's This?]

Today, you are likely to spend a great deal of time at a dollar discount store hoping to buy either a T-shirt commemorating the 2000 Olympics or a genuine fake plastic Tiffany lamp. Be on the lookout for malfunctioning pocket calculators.
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This isn't me! What am I?

The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"The majority of men meet with failure because of their lack of persistence in creating new plans to take the place of those that fail. "

-- Napoleon Hill, author

AR
Average Revenue, Autoregressive
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