Question: For a given product demand, the time - series trend equation is 5 3 - 4 x . The negative sign on the slope of

For a given product demand, the time-series trend equation is 53-4x. The negative sign on the slope of the equation:
Is an indication that product demand is declining
Implies that the coefficient of determination will also be negative
Implies that the cumulative error will be negative
Is a mathematical impossibility
 For a given product demand, the time-series trend equation is 53-4x.

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