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AE LINE: Another term for aggregate expenditure line, which is 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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ARC ELASTICITY The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either a wall poster commemorating the 2000 Presidential election or a rechargeable flashlight. Be on the lookout for defective microphones.
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This isn't me! What am I?
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"If you wouldn't write it and sign it, don't say it." -- Earl Wilson, Columnist
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NIA
National Income Accounts
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