A graphical depiction of the relation between aggregate expenditures by the three domestic macroeconomic sectors (household, business, and government) and the level of aggregate income or production. The three-sector aggregate expenditures line combines consumption expenditures, investment expenditures, and government purchases. The slope of this aggregate expenditures line is based on the marginal propensity to consume, adjusted for marginal propensities of the other expenditures that are assumed to be induced when constructing the line. This is one of three aggregate expenditures lines based on the number of sectors included. The others are the two-sector aggregate expenditures line and the four-sector aggregate expenditures line.

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A pedestrian must always be on guard during any economic excursion, especially when passing the Sylvester J. Peabody Federal Office Building here in Shady Valley. You never know when a window will burst open sending a barrage of glass slivers and economic statistics haphazardly into the street. This is usually followed by a pointy-headed economist who pokes his pointy head through the remaining shards of glass to adamantly declare that there's absolutely, positively NO RECESSION! But he'll recheck the numbers just in case there really is one. WATCH OUT! DUCK!
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Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a set of tires or a birthday gift for your grandfather. Be on the lookout for celebrities who speak directly to you through your television.
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