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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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POLITICAL BUSINESS CYCLES

The notion that business cycles are caused by elected government leaders who manipulate the economy to achieve personal political goals, that is, to be re-elected and remain in office. The leaders stimulate the economy leading up to an election, creating a business-cycle expansion that ensures (they hope) re-election, they then induce a business-cycle contraction after the election to correct problems created by the pre-election stimulation. This explanation suggests that government is the source of business cycles are should not be allowed to implement discretionary stabilization policies.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a wall poster commemorating yesterday or pink cotton balls. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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currency and coins held by the nonbank public plus checkable deposits issued by traditional banks, savings and loan associations, credit unions, and mutual savings banks
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