Simple exponential smoothing is being used to forecast demand. The previous forecast of 66 turned out to be four units less than actual demand. If the next forecast is 66.6, what is the value of the smoothing constant, ??

Recent past demand for product ZXT is given in the following table.

Month Actual Demand
February 20
March 22
April 33
May 35
June 31
July 48
August 41


Answer: 0.15

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