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September 24, 2026 

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REAL-BALANCE EFFECT: A change in aggregate expenditures on real production made by the household, business, government, and foreign sectors that results because a change in the price level alters the purchasing power of money. This is one of three effects underlying the negative slope of the aggregate demand curve associated with a movement along the aggregate demand curve and a change in aggregate expenditures. The other two are interest-rate effect and net-export effect.

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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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APLS

PINK FADFLY
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Today, you are likely to spend a great deal of time at an auction wanting to buy either any book written by Stephan King or a T-shirt commemorating next Thursday. Be on the lookout for door-to-door salesmen.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
"God gives talent; work transforms talent into genius. "

-- Anna Pavlova, ballerina

SIPP
Survey of Income and Program Participation
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