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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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AUTONOMOUS EXPENDITURES Expenditures on aggregate production by the four macroeconomic sectors that do not depend on income or production (especially national income or even gross domestic product). That is, changes in income do not generate changes in these expenditures. Each of the four aggregate expenditures--consumption, investment expenditures, government purchases, and net exports--have an autonomous component. Autonomous expenditures are affected by the ceteris paribus aggregate expenditures determinants and are measured by the intercept term of the aggregate expenditures line. The alternative to autonomous expenditures are induced expenditures, expenditures which do depend on income.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either a birthday gift for your grandmother or a T-shirt commemorating yesterday. Be on the lookout for strangers with large satchels of used undergarments.
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"If we all did the things we are capable of doing, we would literally astound ourselves." -- Thomas Edison
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JEL
Journal of Economic Literature
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