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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.
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SELLERS' EXPECTATIONS, SUPPLY DETERMINANT The expectations that sellers have concerning the future price of a good, which is assumed constant when a supply curve is constructed. If sellers expect a higher price, then supply decreases. If sellers expect a lower price, then supply increases. Sellers' expectations are one of five supply determinants that shift the supply curve when they change. The other four are resource prices, production technology, other prices, and number of sellers.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway wanting to buy either a package of 3 by 5 index cards, the ones without lines or a blue mechanical pencil. Be on the lookout for attractive cable television service repair people.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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"The time your game is most vulnerable is when you're ahead; never let up. " -- Rod Laver, Tennis player
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NIA
National Income Accounts
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