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LRAC CURVE: The common abbreviation for the long-run average cost curve, which is 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 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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Lesson 4: Production Possibilities | Unit 1: Getting Started
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Page: 3 of 24
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The production possibilities analysis has two main limitations:- First, Preferences: This analysis says nothing about which goods people want and which provide the most satisfaction. It only indicates the available options.
- Second, Economic Efficiency: This analysis does not ensure we have economic efficiency-the combination that would generate the most satisfaction from the resources.
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MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES The change in government purchases induced by a change in income or production (national income or gross domestic product). The marginal propensity for government purchases (abbreviated MPG) is another term for the slope of the government purchases line and is calculated as the change in government purchases divided by the change in income or production. The MPG plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part of the multiplier process. A related marginal measure is the marginal propensity to consume.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction looking to buy either a how-to book on building remote controlled airplanes or an extra large beach blanket. Be on the lookout for rusty deck screws.
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This isn't me! What am I?
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A scripophilist is one who collects rare stock and bond certificates, usually from extinct companies.
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"You need just the right amount of ambition . . . If you have too little ambition, you don't push or work hard. If you have too much ambition, you put yourself ahead of others, elbow them out of your way. " -- Andy Grove, Intel chairman and co-founder
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APEC
Asia-Pacific Economic Co-operation
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