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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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COMPETITION

In general, the actions of two or more rivals in pursuit of the same objective. In an economic context, the specific objective pursued is usually either selling goods to buyers or buying goods from sellers.

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Today, you are likely to spend a great deal of time lost in your local discount super center wanting to buy either a bookshelf that will fit in your closet or a birthday greeting card for your grandfather. Be on the lookout for the last item on a shelf.
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During the American Revolution, the price of corn rose 10,000 percent, the price of wheat 14,000 percent, the price of flour 15,000 percent, and the price of beef 33,000 percent.
"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. Most men succeed because they are determined to. "

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