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ADJUSTMENT, LONG-RUN AGGREGATE MARKET: Disequilibrium in the long-run aggregate market induces changes in the price level that restore equilibrium. If the price level is above the long-run equilibrium price level, economy-wide product market surpluses cause the price level to fall. If the price level is below the long-run equilibrium price level, economy-wide product market shortages cause the price level to rise. In both cases long-run equilibrium is restored. Price level changes induce changes in aggregate expenditures but NOT changes in real production. The reason is that long-run aggregate supply is full-employment real production, which is unaffected by the price level.
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PERFECTLY ELASTIC An elasticity alternative in which infinitesimally small changes in one variable (usually price) cause infinitely large changes in another variable (usually quantity). Quantity is infinitely responsive to price. Any change in price, no matter how small, triggers an infinite change in quantity. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Perfectly elastic is one of five elasticity alternatives. The other four are perfectly inelastic, relatively elastic, relatively inelastic, and unit elastic.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time at a flea market hoping to buy either an ink cartridge for your printer or a rechargeable battery for your camera. Be on the lookout for the happiest person in the room.
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Lombard Street is London's equivalent of New York's Wall Street.
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"Experience keeps a dear school, but fools will learn in no other. " -- Benjamin Franklin
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AR(N)
A nth-order Autoregressive Process
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