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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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ORDINAL UTILITY The notion that utility--the satisfaction of wants and needs achieved through the consumption of goods and services--is measured by a ranking of preferences (first, second, third, etc.) that are only comparable on a relative basis. Ordinal utility does not presume that satisfaction is a measurable characteristic of a person, like height or weight, that can be compared against an established benchmark. The contrasting notion is cardinal utility, which is based on a numerical standard.
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ORANGE REBELOON
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Today, you are likely to spend a great deal of time surfing the Internet seeking to buy either a coffee cup commemorating next Thursday or a replacement remote control for your stereo system. Be on the lookout for gnomes hiding in cypress trees.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"The truth is not for all men, but only for those who seek it. " -- Ayn Rand, writer
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USDA
United States Department of Agriculture
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