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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 7: Market Equilibrium | Unit 5: The Method
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Page: 19 of 22
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Topic:
Too Little Production
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This market has a 50-cent price and a 400-tape quantity in equilibrium.- Note the demand price and the supply price if the quantity is 300 tapes.
- The demand price is 60 cents. This is the value of the good produced.
- The supply price is 40 cents. This is the value of goods not produced.
- Producing this quantity is the same as giving up 40 cents and getting 60 cents in return.
- 300 tapes is not an efficient use of resources
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AGGREGATE DEMAND The total real expenditures on final goods and services produced in the domestic economy that buyers are willing and able to undertake at different price levels, during a given time period (usually a year). Aggregate demand, usually abbreviated AD, is an inverse relation between price level and aggregate expenditures. This is one half of the AS-AD (aggregate market) analysis. The other half is aggregate supply. Aggregate demand consists of four aggregate expenditures--consumption expenditures, investment expenditures, government purchases, and net exports--made by the four macroeconomic sectors--household, business, government, and foreign.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time at an auction seeking to buy either a key chain with a built-in flashlight and panic button or a green and yellow striped sweater vest. Be on the lookout for high interest rates.
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The first paper currency used in North America was pasteboard playing cards "temporarily" authorized as money by the colonial governor of French Canada, awaiting "real money" from France.
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"Never confuse a single defeat with a final defeat." -- F. Scott Fitzgerald, writer
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BNA
Bureau of National Affairs
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