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AE LINE: Another term for aggregate expenditure line, which is a line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.

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Lesson 20: Oligopoly | Unit 1: Intro Page: 2 of 24

Topic: Market Structure Continuum <=PAGE BACK | PAGE NEXT=>

  • The market structure continuum can be illustrated by this diagram.

  • Oligopoly occupies the right half of the continuum.

  • As a continuum, there are no clear-cut dividing lines between oligopoly and the two adjacent market structures. Let's see why:

    Versus Monopoly

    • One or More Than One

    • Substitutes

    • Cooperation

    Versus Monopolistic Competition:

    • Many or Few

    • Dominance by a Few

    • Geographic Area


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MARGINAL PRODUCT CURVE

A curve that graphically illustrates the relation between marginal product and the quantity of the variable input, holding all other inputs fixed. This curve indicates the incremental change in output at each level of a variable input. The marginal product curve is one of three related curves used in the analysis of the short-run production of a firm. The other two are total product curve and average product curve. The marginal product curve plays in key role in the economic analysis of short-run production by a firm.

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APLS

PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a T-shirt commemorating the first day of winter or software that won't crash your computer. Be on the lookout for small children selling products door-to-door.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"Look at the abundance all around you as you go about your daily business. You have as much right to this abundance as any other living creature. It's yours for the asking."

-- Earl Nightingale

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