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AGGREGATE EXPENDITURE LINE: A line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.
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Lesson 10: Gross Domestic Product | Unit 5: Issues
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Page: 24 of 25
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Topic:
What It Doesn't Do
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GDP and related measures are not perfect.- GDP is only an indicator of economic activity. Because it requires interpretation and analysis it is subject to misinterpretation and misanalysis.
- GDP is an aggregate measure for the economy. It measures total production, but it does not indicate who receives the production, the distribution of production.
- GDP does not measure the satisfaction of wants and needs. GDP can increase even though welfare does not increase, or even decreases. GDP might even decrease even though welfare is greater.
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MARGINAL PROPENSITY TO IMPORT The change in imports purchased from the foreign induced by a change in income or production (national income or gross domestic product). The marginal propensity to import (abbreviated MPM) is another term for the slope of the imports line and is calculated as the change in imports divided by the change in income or production. The MPM plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors hoping to buy either a handcrafted bird house or a weathervane with a chicken on top. Be on the lookout for slow moving vehicles with darkened windows.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"Look at the abundance all around you as you go about your daily business. You have as much right to this abundance as any other living creature. It's yours for the asking." -- Earl Nightingale
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MSE
Minimum Efficient Scale
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