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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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KEYNESIAN CROSS

A diagram illustrating the basic Keynesian theory of macroeconomics, with aggregate expenditures measured on the vertical axis and aggregate production measured on the horizontal axis, with the relation between aggregate expenditures and aggregate production represented by a positively-sloped aggregate expenditures line. The "cross" aspect of this diagram is the intersection between the aggregate expenditures line and a 45-degree line indicating every point of equality between aggregate expenditures and aggregate production. The "Keynesian" aspect of this diagram is derived from John Maynard Keynes, the developer and namesake of Keynesian economics.

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APLS

BLACK DISMALAPOD
[What's This?]

Today, you are likely to spend a great deal of time at a going out of business sale looking to buy either a T-shirt commemorating the first day of spring or a coffee cup commemorating last Friday (you know why). Be on the lookout for door-to-door salesmen.
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This isn't me! What am I?

In the early 1900s around 300 automobile companies operated in the United States.
"It is not fair to ask of others what you are unwilling to do yourself. "

-- Eleanor Roosevelt, diplomat, activist

PWAC
Present Worth of Annual Costs
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