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A POSTERIORI: A conclusion reached through logical reasoning based on facts and observations about the real world. This notion is closely related to the scientific verification of hypotheses and the identification of principles. A similar sounding, but opposite term is a prior, which is a unverified presumption made before an analysis is undertaken. For example, in the study of economics of crime you might assume, a priori, that people are basically "good", and conclude, a posteriori, that people are more likely to commit crimes when the threat of capture and conviction is lower.
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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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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either an instructional DVD on learning to the play the oboe or a small, foam rubber football. Be on the lookout for neighborhood pets, especially belligerent parrots.
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Two and a half gallons of oil are needed to produce one automobile tire.
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"Nobody can be successful unless he loves his work. " -- David Sarnoff, TV pioneer
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