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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is 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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CHANGE IN AGGREGATE EXPENDITURES The movement along an aggregate demand curve caused by a change in the price level. A change in aggregate expenditures is ONLY caused by a change in the price level. This is one of two changes related to aggregate demand. The other is a change in aggregate demand. A change in aggregate expenditures is comparable to a change in quantity demanded.
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BEIGE MUNDORTLE
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages wanting to buy either a birthday greeting card for your grandfather or a weathervane with a cow on top. Be on the lookout for letters from the Internal Revenue Service.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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"Success is going from failure to failure without a loss of enthusiasm. " -- Winston Churchill, British statesman
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EJ
Economic Journal
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