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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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VALUE

The worth members of society place on a good, service, resource, commodity, or other asset, which is based on the direct or indirect satisfaction of wants and needs generated. In an economy that uses markets to exchange commodities, value is commonly indicated by price and measured by the economy's monetary unit.

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Today, you are likely to spend a great deal of time lost in your local discount super center trying to buy either a how-to book on fine dining or a coffee cup commemorating the first day of winter. Be on the lookout for malfunctioning pocket calculators.
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The average bank teller loses about $250 every year.
"The work of the individual still remains the spark that moves mankind forward. "

-- Igor Sikorsky, aeronautical engineer

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