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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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INCREASING RETURNS TO SCALE A given proportional change in all resources in the long run results in a proportional greater change in production. Increasing returns to scale exists if a firm increases ALL resources--labor, capital, and other inputs--by a given proportion (say 10 percent) and output increases by more than this proportion (that is more than 10 percent). This is one of three returns to scale. The other two are decreasing returns to scale and constant returns to scale.
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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors hoping to buy either a New York Yankees baseball cap or a solid oak entertainment center. Be on the lookout for poorly written technical manuals.
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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"It is not the straining for great things that is most effective; it is the doing of the little things, the common duties, a little better and better." -- Elizabeth Stuart Phelps, Writer
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OTC
Over the Counter
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