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 timeseries trend equation is The negative sign on the slope of the equation: is an indication that product demand is declining.
is an indication that the forecast is biased, with forecast values lower than actual values.
implies that the cumulative error will be negative.
implies that the coefficient of determination will also be negative.
is a mathematical impossibility.
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