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AGGREGATE EXPENDITURE DETERMINANTS: An assortment of ceteris paribus factors that affect aggregate expenditures, but which are assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.
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ECONOMIES OF SCALE Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. Economies of scale result from increasing returns to scale and are graphically illustrated by a negatively-sloped long-run average cost curve. Economies of scale usually occur for relatively small levels of production and are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale create a U-shaped long-run average cost curve.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store hoping 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 defective microphones.
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This isn't me! What am I?
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It's estimated that the U.S. economy has about $20 million of counterfeit currency in circulation, less than 0.001 perecent of the total legal currency.
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"One person with a belief is equal to a force of ninety-nine with only interests." -- John Stuart Mill
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NNP
Net National Product
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