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DEMAND ELASTICITY AND TOTAL EXPENDITURE: The notion that price-induced changes in total expenditure for a good (price times quantity) depends on the relative price elasticity of demand. In particular, for relatively elastic demand (1 < E < ∞) changes in price cause total expenditure to change in the opposite direction. An increase in price causes total expenditure to fall and a decrease in price causes total expenditure to rise. For relatively inelastic demand (0 < E < 1) changes in price cause total expenditure to change in the same direction. An increase in price causes total expenditure to rise and a decrease in price causes total expenditure to fall. For unit elastic demand (E =1) price changes do not cause any change in total expenditure. Total expenditure is the same whether price increases or decreases.
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PERFECT COMPETITION, DEMAND The demand curve for the output produced by a perfectly competitive firm is perfectly elastic at the going market price. The firm can sell all of the output that it wants at this price because it is a relatively small part of the market. As a price taker, the firm has no ability to charge a higher price and no reason to charge a lower one. The market price facing a perfectly competitive firm is also average revenue and, most important, marginal revenue.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time at a flea market trying to buy either several magazines on computer software or a T-shirt commemorating the second moon landing. Be on the lookout for celebrities who speak directly to you through your television.
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This isn't me! What am I?
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
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"Try not to become a man of success, but rather try to become a man of value. " -- Albert Einstein
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IGARCH
Integrated Generalized Autoregressive Conditional Heteroskedasticity
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