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HERFINDAHL-HIRSHMAN 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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BROWN PRAGMATOX
Your compete MICRO*scope for today
You are the type of person who generally weighs benefits against costs, but the costs usually win. Family and friends realize that you carefully consider every expenditure that you make. Today, you are likely to spend a great deal of time lost in your local discount super center wanting to buy either a pair of red and purple designer socks or a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki. Be on the lookout for the last item on a shelf. You should consider shopping at stores or businesses beginning with the letter S, but do not buy any products with a serial number or product code containing the number 245827. Your preferred shopping venue is thrift stores. Your special symbol is the comma (,).
Is this You?
As a Brown Pragmatox, you are down-to-earth and practical. You are hard working and industrious. You are frugal to the point that you might even refrain from making a purchase that you really, really need. Doing so often causes problems down the road. You definitely go with function over form and substance over style.
This isn't me! What am I?
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MARGINAL PRODUCT The change in the quantity of total product resulting from a unit change in a variable input, keeping all other inputs unchanged. Marginal product, usually abbreviated MP, is found by dividing the change in total product by the change in the variable input. Marginal product, which occasionally goes by the alias marginal physical product (MPP), is one of two measures derived from total product. The other is average product.
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Taking A Ride On TRANSPORTATION INFRASTRUCTUREOur pedestrian excursion gives us a ground-level view of the economy, but it's certainly slow and time-consuming. If you're like me, you've probably thought once or twice about jumping into an Omni Motors XL GT 9000 sports coupe to speed us along the way. Or perhaps an Omni Airlines 30-day tourist excursion would make our trip faster and less exhausting. That's one nice thing about modern transportation, it's pretty quick and not too expensive. It also helps us get a whole lot closer to solving the unsolvable problem of scarcity. However, for a really good pedestrian view of transportation and how it helps us along, we'd better remain on foot.
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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.
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"The true idealist pursues what his heart says is right in a way that his head says will work. " -- Richard Nixon, 37th US president
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IPUMS
Integrated Public Use Microdata Series
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