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AGGREGATE EXPENDITURE DETERMINANTS: An assortment of ceteris paribus factors that affect aggregate expenditures, but which are assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.
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MARGINAL REVENUE, MONOPOLISTIC COMPETITION The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopolistically competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopolistically competitive firm equates marginal revenue and marginal cost.
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The Depths Of DEPRESSION In the discussion of recession we see that one of the problems confronting both pedestrians and the economy is stepping in an occasional pothole. These potholes are usually small and do little damage. Every now and then, however, our economy falls face first into one humdinger of pothole that's big enough to swallow the better part of a marching band. Rather than a mere recessionary pothole, these are best thought of as depressionary canyons. The Great Depression of the 1930s was the most memorable depressionary canyon on record for the good old U. S. of A. The question we need to ponder over the next few pages is: Are there any more depressionary canyons like the 1930s lurking along the economic pavement?
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
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"Lead the life that will make you kindly and friendly to everyone about you, and you will be surprised what a happy life you will lead." -- Charles M. Schwab
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KCBT Kansas City Board of Trade
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