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LONG-RUN AVERAGE COST CURVE: A curve depicting the per unit cost of producing a good or service in the long run when all inputs are variable. The long-run average cost curve (usually abbreviated LRAC) can be derived in two ways. On is to plot long-run average cost, which is, long-run total cost divided by the quantity of output produced. at different output levels. The more common method, however, is as an envelope of an infinite number of short-run average total cost curves. Such an envelope is base on identifying the point on each short-run average total cost curve that provides the lowest possible average cost for each quantity of output. The long-run average cost curve is U-shaped, reflecting economies of scale (or increasing returns to scale) when negatively-sloped and diseconomies of scale (or decreasing returns to scale) when positively sloped. The minimum point (or range) on the LRAC curve is the minimum efficient scale.
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AVERAGE PROPENSITY TO CONSUME The proportion of household income that is used for consumption expenditures. The average propensity to consume (abbreviated APC) is really nothing more than average consumption. Together with the average propensity to save, it indicates how a given level of income is divided between consumption and saving. A related consumption measure is the marginal propensity to consume.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time at a flea market trying to buy either a coffee cup commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a rechargeable battery for your cell phone. Be on the lookout for mail order catalogs with hidden messages.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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"Democracy is based on the conviction that man has the moral and intellectual capacity . . . to govern himself with reason and justice. " -- Harry Truman, 33rd U.S. president
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QJE
Quarterly Journal of Economics
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