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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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MARGINAL PROPENSITY TO INVEST

The change in business investment expenditures induced by a change in income or production (national income or gross domestic product). The marginal propensity to invest (abbreviated MPI) is another term for the slope of the investment line and is calculated as the change in investment divided by the change in income or production. The MPI plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.

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Today, you are likely to spend a great deal of time browsing about a thrift store wanting to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for mail order catalogs with hidden messages.
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The word "fiscal" is derived from a Latin word meaning "moneybag."
"And while the law of competition may be sometimes hard for the individual, it is best for the race, because it ensures the survival of the fittest in every department. "

-- Andrew Carnegie, entrepreneur

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