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INCOME-EXPENDITURE MODEL: A macroeconomic model, which captures the essence of Keynesian economics, is based on the equality between total income generated from gross domestic product and total expenditures on gross domestic product. The cornerstone of the income-expenditure model is the consumption function, which relates household consumption expenditures to income and gives rise to the aggregate expenditure line with the addition of investment, government purchases, and net exports. The intersection between the aggregate expenditure line at the 45-degree identifies equilibrium.
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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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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time searching for a specialty store wanting to buy either a flower arrangement with a lot of roses for your grandmother or a wall poster commemorating the first day of winter. Be on the lookout for broken fingernail clippers.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
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"Intense concentration hour after hour can bring out resources in people they didn't know they had. " -- Edwin Land, inventor, entrepreneur
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BEA
Bureau of Economic Analisys
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