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CHANGE IN AGGREGATE DEMAND: A shift of the aggregate demand curve caused by a change in one of the aggregate demand determinants. In essence, a change in aggregate demand is caused by any factor affecting aggregate demand EXCEPT the price level. This concept should be contrasted directly with a change in aggregate expenditures. You might also want to review the terms change in quantity demanded and change in demand, as well. The change in aggregate demand is comparable to the change in market demand. A change in aggregate demand is a change in ALL price level-aggregate expenditure combinations, meaning that each price level is matched up with a different aggregate expenditure (which is illustrated as a shift of the aggregate demand curve). This change in aggregate demand is caused by a change in any of the aggregate demand determinants. In contrast, a change in aggregate expenditures is a change from one price level-aggregate expenditure combination to the another (which is illustrated as a movement along a given aggregate demand curve).
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SHORT-RUN AGGREGATE SUPPLY AND MARKET SUPPLY The short-run aggregate supply curve, or SRAS curve, has similarities to, but differences from, the standard market supply curve. Both are positively sloped. Both relate price and quantity. However, the market supply curve is positively sloped due to the law of diminishing marginal returns and the short-run aggregate supply curve is positively-sloped due to inflexible prices, the pool of natural unemployment, and imbalances in real resource prices.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction trying to buy either a large flower pot shaped like a Greek urn or a small palm tree that will fit on your coffee table. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
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"You are never given a dream without also being given the power to make it true." -- Richard Bach, Author
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MRS
Marginal Rate of Substitution
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