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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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QUANTITY

The amount of a commodity (good, service, or resource) that is produced, consumed, bought, sold, or exchanged. The quantity of a commodity is often the focus of economic analysis. It takes center stage in the market model, as well as the theories of short-run production and consumer demand theory. In the standard market diagram, as well as most other analyses, quantity is displayed on the horizontal axis.

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Today, you are likely to spend a great deal of time watching the shopping channel wanting to buy either a weathervane with a chicken on top or a flower arrangement with daisies and carnations for your uncle. Be on the lookout for jovial bank tellers.
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Three-forths of the gold mined each year is used to manufacture jewelry.
"The secret of getting ahead is getting started. The secret of getting started is breaking your complex, overwhelming tasks into small manageable tasks, and then starting on the first one. "

-- Mark Twain, writer

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