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INDEPENDENT VARIABLE: A variable that is identified outside the workings of the model. Also termed an exogenous variable, an independent variable is in essence the "input" of the model. It should be compared with an endogenous variable this is the "output" of the model.
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FOUR-FIRM CONCENTRATION RATIO The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius looking to buy either clothing for your pet dog or an ink cartridge for your printer. Be on the lookout for pencil sharpeners with an attitude.
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In the early 1900s around 300 automobile companies operated in the United States.
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"Each of us is issued but one life, and we know full well how it all ends. It would be regrettable to squander this one chance on someone else's appearance, someone else's experience. " -- Joseph Brodsky, Writer
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LAN
Locally Asymptotically Normal
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