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PERFECT COMPETITION AND SHORT-RUN SUPPLY CURVE: A perfectly competitive firm's supply curve is that portion of its' marginal cost curve that lies above the minimum of the average variable cost curve. A perfectly competitive firm maximizes profit by producing the quantity of output that equates price and marginal cost. As such, the firm moves along it's marginal cost curve in response to alternative prices. Because the marginal cost curve is positively sloped due to the law of diminishing marginal returns, the firm's supply curve is also positively sloped.

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Lesson 12: Business Cycles | Unit 2: A Simple Cycle Page: 6 of 26

Topic: Long-Run Trend <=PAGE BACK | PAGE NEXT=>

A closer look to the business cycle.
  • The red line represents the pattern of actual real GDP over time.
  • The blue line is the long-run trend, the historical average of real GDP growth, about 3% each year.
  • In general, real GDP increases.
  • But real GDP occasionally declines, frequently rises faster the long-run trend, and seldom rises exactly equal to the long-run trend.
  • A business cycle is combination of the two periods, (1) expanding economic activity moves the economy up to and above the long-run trend and (2) declining activity that drops it below this trend.

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PERSONAL CONSUMPTION EXPENDITURES

The official item in the National Income and Product Accounts maintained by the Bureau of Economics Analysis that measures household consumption expenditures on gross domestic product. Personal consumption expenditures are far and away the largest and most stable of the four expenditures, averaging about 65 to 70 percent of gross domestic product. The other official expenditures included in the National Income and Product Accounts are gross private domestic investment, government consumption expenditures and gross investment, and net exports of goods and services.

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APLS

BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time browsing through a long list of dot com websites looking to buy either a set of steel-belted radial snow tires or a wall poster commemorating the 2000 Presidential election. Be on the lookout for crowded shopping malls.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"Man is born to live, not to prepare for life. "

-- Boris Pasternak, writer

WLS
Weighted Least Squares
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