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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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PERFECT COMPETITION, CHARACTERISTICS

The four key characteristics of perfect competition are: (1) a large number of small firms, (2) identical products sold by all firms, (3) perfect resource mobility or the freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology.

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APLS

GRAY SKITTERY
[What's This?]

Today, you are likely to spend a great deal of time at a going out of business sale trying to buy either 500 feet of telephone cable or a package of 4 by 6 index cards, the ones with lines. Be on the lookout for crowded shopping malls.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"My future starts when I wake up every morning . . . Every day I find something creative to do with my life. "

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CPI-U
Consumer Price Index-All Urban Consumers
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