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AGGREGATION: The process of adding up, summing, or otherwise identifying the total value of a variable or measure, especially when used in the study of macroeconomics. Common items that are aggregated are demand, supply, and expenditures on gross domestic product, which result in aggregate demand, aggregate supply, and aggregate expenditures.

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DECREASING-COST INDUSTRY

A perfectly competitive industry with a negatively-sloped long-run industry supply curve that results because expansion of the industry causes lower production cost and resource prices. A decreasing-cost industry occurs because the entry of new firms, prompted by an increase in demand, causes the long-run average cost curve of each firm to shift downward, which decreases the minimum efficient scale of production.

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PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time at a flea market looking to buy either a package of 4 by 6 index cards, the ones with lines or a 50 foot extension cord. Be on the lookout for the last item on a shelf.
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This isn't me! What am I?

It's estimated that the U.S. economy has about $20 million of counterfeit currency in circulation, less than 0.001 perecent of the total legal currency.
"When you play, play hard; when you work, don't play at all. "

-- Theodore Roosevelt, 26th US president

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