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A: The common notation for the "intercept" term of an equation specified as Y = a + bX. Mathematically, the a-intercept term indicates the value of the Y variable when the value of the X variable is equal to zero. Theoretically, the a-intercept is frequently used to indicate exogenous or independent influences on the Y variable, that is, influences that are independent of the X variable. For example, if Y represents consumption and X represents national income, a measures autonomous consumption expenditures.
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MARKET FAILURES Imperfections in the exchange process between buyers and sellers that prevent markets from efficiently allocating scarce resources. Market failures come in four varieties -- public goods, market control, externalities, and imperfect information. Market efficiency is achieved if the value of goods produced is equal to the value of foregone production. Markets fail when this efficiency condition is not achieved. Such failures can only be corrected by government intervention.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time watching the shopping channel trying to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for door-to-door salesmen.
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This isn't me! What am I?
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The average bank teller loses about $250 every year.
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"There are no shortcuts to any place worth going. " -- Beverly Sills, Opera singer
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IGARCH
Integrated Generalized Autoregressive Conditional Heteroskedasticity
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