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ABSTRACTION METHODS: Abstraction is the process of simplifying the complexities of the real world by ignoring (hopefully) unimportant details, especially (for our purposes) while doing economic analysis. Three common methods of actual, real world abstraction used in economic theories are words, graphs, and equations. Words can be misunderstood. Graphs are a little more precise. And equations tend to be the most precise of the three.
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AGGREGATE EXPENDITURES LINE A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. In Keynesian economics, the aggregate expenditures line is the essential component of the Keynesian cross analysis used to identify equilibrium income and production. Like any straight line, the aggregate expenditures line is characterized by vertical intercept, which indicates autonomous expenditures, and slope, which indicates induced expenditures. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking investment, government purchases, and net exports to the consumption line.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs trying to buy either arch supports for your shoes or an AC adapter that works with your MPG player. Be on the lookout for strangers with large satchels of used undergarments.
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Rosemary, long associated with remembrance, was worn as wreaths by students in ancient Greece during exams.
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"Difficulties mastered are opportunities won. " -- Winston Churchill, Statesman
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IJIO
International Journal of Industrial Organization
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