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MARGINAL PROPENSITY TO CONSUME: The proportion of each additional dollar of household income that is used for consumption expenditures. Or alternatively, this is the change in consumption expenditures due to a change in disposable income. Abbreviated MPC, the marginal propensity to consume is the slope of the consumption or propensity-to-consume line that forms the foundation for Keynesian economics. As such, it also takes center stage for the slope of the aggregate expenditure line and the multiplier effect. The sum of the marginal propensity to consume and the related concept, the marginal propensity to save, is equal to one.
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SUBSTITUTE-IN-CONSUMPTION One of two (or more) goods that provide the same basic satisfaction of a want or need when consumed. A substitute-in-consumption is one of two alternatives falling within the other prices determinant of demand. The other is a complement-in-consumption. An increase in the price of one substitute good causes an increase in demand for the other. A substitute-in-consumption has a positive cross elasticity of demand.
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GRAY SKITTERY
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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club seeking to buy either a birthday greeting card for your mother that doesn't look like a greeting card or a handcrafted spice rack. Be on the lookout for poorly written technical manuals.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"Long-range goals keep you from being frustrated by short-term failures " -- J. C. Penney, Retailer
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RPI
Retail Price Index
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