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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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PERSONAL TAXES

The common term for the portion of personal income used to pay personal tax and nontax payments. Personal tax and nontax payments is the official item in the National Income and Product Accounts maintained by the Bureau of Economics Analysis measuring the personal income taxes paid to the government sector on personal income received by the household sector. Personal tax and nontax payments are subtracted from personal income (PI) to calculate disposable income (DI). Personal tax and nontax payments are about 15 percent of personal income and about 13 percent of gross domestic product.

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APLS

BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time going from convenience store to convenience store looking to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for strangers with large satchels of used undergarments.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"Rowing harder doesn't help if the boat is headed in the wrong direction. "

-- Kenichi Ohmae, management consultant

BPEA
Brookings Papers on Economic Activity
A PEDestrian's Guide
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