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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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VERY LONG RUN, MICROECONOMICS

A production time period in which all inputs are variable, including those under control of the firm and those beyond the control of the firm. During the very long run, not only are the labor, capital, land, and entrepreneurship inputs variable, but so too are key production inputs such as government rules, technology, and social customs. This is one of four production time periods used in the study of microeconomics. The other three are short run, long run, and very short run.

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Today, you are likely to spend a great deal of time at a crowded estate auction wanting to buy either a pair of red and purple designer socks or a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki. Be on the lookout for poorly written technical manuals.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
"If a man hasn't discovered something that he will die for, he isn't fit to live. "

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CPI-U
Consumer Price Index-All Urban Consumers
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