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DISCRETIONARY INCOME: After-tax income over which a person (or the entire household sector) has more or less complete discretionary control, which can be then used for either consumption or saving. Discretionary income is most commonly measured at the macroeconomic level by disposable income.

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INJECTIONS-LEAKAGES MODEL

A macroeconomic model that balances non-consumption expenditures on production (injections) and non-consumption uses of income (leakages) that is used to identify the equilibrium level of, and analyze disruptions to, aggregate production and income. The injections-leakages model is based on the principles of Keynesian economics and provides an alternative to the standard aggregate expenditures (Keynesian cross) analysis. The three injections included in the model are investment expenditures, government purchases, and exports. The three leakages included in the model are saving, taxes, and imports. Three variations are the two-sector injections-leakages model (or saving-investment model), three-sector injections-leakages model, and four-sector injections-leakages model.

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time flipping through mail order catalogs wanting to buy either a case for your designer sunglasses or arch supports for your shoes. Be on the lookout for mail order catalogs with hidden messages.
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Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
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CDF
Cumulative Distribution Function
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