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MARGINAL PROPENSITY TO INVEST: The proportion of each additional dollar of national income that is used for investment expenditures. Or alternatively, this is the change in investment expenditures due to a change in national income. Abbreviated MPI, the marginal propensity to invest is the slope of the investment line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.

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AVERAGE REVENUE PRODUCT AND MARGINAL REVENUE PRODUCT

A mathematical connection between average revenue product and marginal revenue product stating that the change in the average revenue product depends on a comparison between the average revenue product and marginal revenue product. If marginal revenue product is less than average revenue product, then average revenue product declines. If marginal revenue product is greater than average revenue product, then average revenue product rises. If marginal revenue product is equal to average revenue product, then average revenue product does not change.

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APLS

BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius looking to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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A scripophilist is one who collects rare stock and bond certificates, usually from extinct companies.
"Chance favors only the prepared mind."

-- Louis Pasteur, biologist

PVCF
Present Value Cash Flow
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