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MARKET STRUCTURE: The manner in which a market is organized, based largely on the number of firms in the industry. The four basic market structure models are: perfect competition, monopoly, monopolistic competition, and oligopoly. The primary difference between each is the number of firms on the supply side of a market. Both perfect competition and monopolistic competition have a large number of relatively small firms selling output. Oligopoly has a small number of relatively large firms. And monopoly has a single firm.

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INVESTMENT EXPENDITURES

Expenditures made by the business sector on final goods and services, or gross domestic product, especially the purchase of productive capital goods. Investment expenditures play a central role in macroeconomic activity affecting both short-run business cycles and long-run economic growth. These expenditures reflect the general act of investment involving foregoing current satisfaction to produce capital goods and are officially measured by gross private domestic investment. These are one of four expenditures on gross domestic product. The other three are consumption expenditures, government purchases, and net exports.

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APLS

YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time strolling through a department store seeking to buy either a dozen high trajectory optic orange golf balls or a large red and white striped beach towel. Be on the lookout for high interest rates.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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FCLT
Functional Central Limit Theorem
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