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AGGREGATE: A common modifier for an assortment of economic terms used in the study of macroeconomics that signifies a comprehensive, often national, total value. This modifier most often surfaces in the study of the AS-AD, or "aggregate market", model of the economy with such terms as aggregate demand and aggregate supply. For example, aggregate demand indicates the total demand for production in the macroeconomy and aggregate supply indicates the total amount of that output produced. Two other noted "aggregate" terms are aggregate expenditures and aggregate production function.
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CONCENTRATION RATIOS A family of measures of the proportion of total output in an industry that is produced by a given number of the largest firms in the industry. The two most common concentration ratios are for the four largest firms and the eight largest firms. The four-firm concentration ratio is the proportion of total output produced by the four largest firms in the industry and the eight-firm concentration ratio is proportion of total output produced by the eight largest firms in the industry. Concentration ratios are commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control of the largest firms in the industry. A related measure is the Herfindahl index.
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
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"Motivation is everything. You can do the work of two people, but you can't be two people. Instead, you have to inspire the next guy down the line and get him to inspire his people." -- Lee Iacocca, Chrysler chairman
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SCF
Survey of Consumer Finances
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