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HERFINDAHL-HIRSHMAN 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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FALLACY OF COMPOSITION

The logical fallacy of arguing that what is true for the parts is also true for the whole. In the study of economics, this takes the form of assuming that what works for parts of the economy, such as households or businesses, also works for the aggregate, or macroeconomy. The contrasting fallacy is the fallacy of division.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway seeking to buy either a flower arrangement in a coffee cup for your father or a how-to book on meeting people. Be on the lookout for high interest rates.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"The only profit center is the customer. "

-- Peter Drucker, management consultant

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