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June 19, 2026 

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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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ALTERNATIVE UNEMPLOYMENT RATES

The official unemployment rate estimated and reported monthly by the Bureau of Labor Statistics (BLS) using data from Current Population Survey is one of six alternative measures of unemployment tracked and reported by the BLS, officially labeled sequentially U1 through U6. The "official" unemployment rate is U3. The other five measures seek to document different ways in which labor can be under utilized, including unemployment duration, job losers, discouraged workers, marginal workers, and part-time workers.

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APLS

YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time searching the newspaper want ads looking to buy either a small, foam rubber football or an instructional DVD on learning to the play the oboe. Be on the lookout for rusty deck screws.
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This isn't me! What am I?

Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
"The will to win is important, but the will to prepare is vital. "

-- Joe Paterno, football coach

PWAC
Present Worth of Annual Costs
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