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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is 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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KEYNESIAN CROSS

A diagram illustrating the basic Keynesian theory of macroeconomics, with aggregate expenditures measured on the vertical axis and aggregate production measured on the horizontal axis, with the relation between aggregate expenditures and aggregate production represented by a positively-sloped aggregate expenditures line. The "cross" aspect of this diagram is the intersection between the aggregate expenditures line and a 45-degree line indicating every point of equality between aggregate expenditures and aggregate production. The "Keynesian" aspect of this diagram is derived from John Maynard Keynes, the developer and namesake of Keynesian economics.

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PINK FADFLY
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Today, you are likely to spend a great deal of time wandering around the shopping mall hoping to buy either a birthday gift for your mother or a weathervane with a horse on top. Be on the lookout for telephone calls from former employers.
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One of the largest markets for gold in the United States is the manufacturing of class rings.
"There's a very positive relationship between people's ability to accomplish any task and the time they're willing to spend on it."

-- Dr. Joyce Brothers

LAD
Least Absolute Deviations
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