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HERFINDAHL 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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AGGREGATE MARKET

An economic model relating the price level and real production that is used to analyze business cycles, gross production, unemployment, inflation, stabilization policies, and related macroeconomic phenomena. The aggregate market, inspired by the standard market model, but adapted to the macroeconomy, captures the interaction between aggregate demand (the buyers) and short-run and long-run aggregate supply (the sellers). Also known by the names AS-AD model or income-price model, the aggregate market is THE cornerstone model of macroeconomic analysis.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time at a flea market looking to buy either a key chain with a built-in flashlight and panic button or a green and yellow striped sweater vest. Be on the lookout for vindictive digital clocks with revenge on their minds.
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This isn't me! What am I?

The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
"My father used to say to me, „Whenever you get into a jam, whenever you get into a crisis or an emergency . . .become the calmest person in the room and you'll be able to figure your way out of it. "

-- Rudolph Giuliani

JRE
Journal of Regulatory Economics
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