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INDEX: A measure of the relative average of a group of items compared to a given base value. Index measures are commonly used in economics to combine and compare diverse measures. One common type of index measure is for prices, such as the Consumer Price Index and the Dow Jones Industrial Average of corporate stock prices. Another noted type of index measure is to track macroeconomic activity, especially the index leading economic indicators. Indexes are usually weighted averages rather than simple arithmetic means that are measured relative to a base value or period. The Consumer Price Index, for example, measures the prices of consumer good, weighted by the quantities purchased. The value of a given period is then stated relative to a base year value, which generates a pure, "unitless" number in the range of 100 (give or take).
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PHENOMENON An event or action that is subject to investigation, analysis, and explanation using the scientific method. Phenomena are the sorts of things that science seeks to explain. They can be common events, like the blowing wind, or unusual, like the extinction of the dinosaurs.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area wanting to buy either a replacement nozzle for your shower or a decorative windchime with plastic . Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?
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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 way employees treat customers reflects the manner in which they're treated by management. " -- James Perkins, president, Cornell University
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AR(N)
A nth-order Autoregressive Process
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