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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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MARGINAL ANALYSIS: A basic technique used in the economics that analyzes small, incremental changes in key variables. The economic obsession with marginal changes exists for at least two reasons. One reason is that many economic decisions made in the real world are made "at the margin." A second reason for using marginal analysis can best be termed analytical sophistication.

     See also | economics | economic analysis | comparative statics | market | model | ceteris paribus | marginal cost | marginal revenue |


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MARGINAL ANALYSIS, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2024. [Accessed: April 26, 2024].


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LONG-RUN TREND

The pattern of potential real gross domestic product of an economy based on full employment of available resources. The long-run trend is commonly represented as a positively-sloped line in a diagram depicting business-cycle phases. This slope captures the economy's expansion in its production possibilities resulting from increases in the quantity and quality of resources.

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The first "Black Friday" on record, a friday marked by a major financial catastrophe, occurred on September 24, 1869 -- A FRIDAY -- when an attempted cornering of the gold market induced a financial crises and economy-wide depression.
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