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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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OPPORTUNITY COST, PRODUCTION POSSIBILITIES

The production possibilities analysis, which is the alternative combinations of two goods that an economy can produce with given resources and technology, can be used to illustrate opportunity cost--the highest valued alternative foregone in the pursuit of an activity.

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PINK FADFLY
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Today, you are likely to spend a great deal of time watching infomercials looking to buy either semi-gloss photo paper that works with your neighbor's printer or a birthday gift for your father that doesn't look like every other birthday gift for your father. Be on the lookout for defective microphones.
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The average bank teller loses about $250 every year.
"Success is the ability to go from one failure to another with no loss of enthusiasm."

-- Sir Winston Churchill

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