Question: Return to the unit sales data used in this chapter. Apply the exponential-smoothing model to this data using values for a of 0.15, 0.2, 0.25
Return to the unit sales data used in this chapter. Apply the exponential-smoothing model to this data using values for a of 0.15, 0.2, 0.25 and 0.3. Assess the accuracy of each choice of a and decide which you would use to forecast future values.
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