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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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AGGREGATE DEMAND SHIFTS Changes in the aggregate demand determinants cause the aggregate demand curve to shift. The mechanism is comparable to that for market demand determinants and market demand. There are two alternatives--an increase in aggregate demand and a decrease in aggregate demand. An increase in spending by any of the four sectors--household, business, government, and foreign--shifts the aggregate demand curve to right. A decrease in spending by these four sectors shifts the aggregate demand curve to left.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time looking for a downtown retail store seeking to buy either a pair of blue silicon oven mitts or a coffee cup commemorating the 2000 Olympics. Be on the lookout for crowded shopping malls.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
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"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. Most men succeed because they are determined to. " -- George Allen, U.S. senator
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JPUBE
Journal of Public Economics
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