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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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EMPIRICAL Based on or relating to the collection or analysis of real world data. The term empirical is commonly used as a modifier to provide contrast with theoretical. Whereas theoretical refers to abstract representations, empirical indicates actual real world observations.
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More money is spent on gardening than on any other hobby.
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"The greatest things ever done on Earth have been done little by little. " -- William Jennings Bryan
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AASB
American Assocation of Small Business
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