
A: The common notation for the "intercept" term of an equation specified as Y = a + bX. Mathematically, the aintercept term indicates the value of the Y variable when the value of the X variable is equal to zero. Theoretically, the aintercept 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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PRODUCTION POSSIBILITIES CURVE A curve that illustrates the production possibilities of an economythe alternative combinations of two goods that an economy can produce with given resources and technology. A production possibilities curve (PPC) represents the boundary or frontier of the economy's production capabilities, hence it is also frequently termed a production possibilities frontier (PPF). As a frontier, it is the maximum production possible given existing (fixed) resources and technology. Producing on the curve means resources are fully employed, while producing inside the curve means resources are unemployed. The law of increasing opportunity cost is what gives the curve its distinctive convex shape.
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A half gallon milk jug holds about $50 in pennies.


"Every man must decide whether he will walk in the light of creative altruism or in the darkness of destructive selfishness."  Martin Luther King, Jr., clergyman


IGARCH Integrated Generalized Autoregressive Conditional Heteroskedasticity


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