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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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APLS

BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time at a going out of business sale wanting to buy either blue cotton balls or a genuine down-filled pillow. Be on the lookout for crowded shopping malls.
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The average bank teller loses about $250 every year.
"You have to find something that you love enough to be able to take risks, jump over the hurdles and break through the brick walls that are always going to be placed in front of you. If you don't have that kind of feeling for what it is you're doing, you'll stop at the first giant hurdle. "

-- George Lucas

WLLN
Weak Law of Large Numbers
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