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Exponential smoothing is used to forecast automobile battery sales. Two value of are examined, = 0.8 and = 0.5. Evaluate the accuracy of each smoothing

Exponential smoothing is used to forecast automobile battery sales. Two value of are examined, = 0.8 and = 0.5. Evaluate the accuracy of each smoothing constant. Which is preferable? (Assume the forecast for January was 23.5 batteries.) Actual sales are given below: Month Actual Battery Sales Forecast January 20.5 23.5 February 21.5 March 15.5 April 14.5 May 13.5 June 16.5

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