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U-SHAPED COST CURVES: The family of short-run cost curves consisting of average total cost, average variable cost, and marginal cost, all of which have U-shapes. They are U-shaped because each has high but falling cost at low quantities of output, which then reaches a minimum, then has rising cost at larger quantities of output. Although the average fixed cost curve is not U-shaped, it's occasionally included with the other three just for sake of completeness.

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AGGREGATE DEMAND DETERMINANTS

An assortment of ceteris paribus factors other than the price level that affect aggregate demand, but which are assumed constant when the aggregate demand curve is constructed. Changes in any of the aggregate demand determinants cause the aggregate demand curve to shift. The specific ceteris paribus factors are commonly grouped by the four, broad expenditure categories--consumption expenditures, investment expenditures, government purchases, and net exports.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time watching infomercials looking to buy either a pleather CD case or a how-to book on fine dining. Be on the lookout for pencil sharpeners with an attitude.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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Exponential Generalized Autoregressive Conditional Heteroskedasticity
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