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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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ENDPOINT ELASTICITY FORMULA

A simple technique for calculating the coefficient of elasticity by estimating the elasticity for discrete changes in two variables using the initial values of each. The distinguishing characteristic of this formula is that percentage changes are calculated based on the initial values of each variable. An alternative technique is the midpoint elasticity formula.

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GRAY SKITTERY
[What's This?]

Today, you are likely to spend a great deal of time watching infomercials looking to buy either a case for your designer sunglasses or arch supports for your shoes. Be on the lookout for mail order catalogs with hidden messages.
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This isn't me! What am I?

The wealthy industrialist, Andrew Carnegie, was once removed from a London tram because he lacked the money needed for the fare.
"No great performance ever came from holding back. "

-- Don Greene, motivational coach, former Green Beret

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