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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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JOINT DEMAND: Demand for two or more commodities that are either complements-in-consumption or complements-in-production. Joint demand results because two or more commodities are used together either to satisfy wants and needs or to produce goods and services. Because the commodities are used jointly, the demand for one good is necessarily based on the use and availability of another good. If, for example, you enjoy milk and brownies as complements-in-consumption, but the bakery is out of brownies, then your demand for milk is also likely to decline. See also | complement-in-consumption | complement-in-production | demand | consumption | production | joint product |  Recommended Citation:JOINT DEMAND, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: June 30, 2025].
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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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On a typical day, the United States Mint produces over $1 million worth of dimes.
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"I learned about the strength you can get from a close family life. I learned to keep going, even in bad times. I learned not to despair, even when my world was falling apart. I learned that there are no free lunches. And I learned the value of hard work. " -- Lee Iacocca
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SLLN Strong Law of Large Numbers
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