Given last period forecast Ft-1 = 50
Actual Demand = Dt-1 = 75
α = Smoothing Constant = 0.2
Based on Simple Exponential Smoothing(SES),
Forecast of current period (Ft) = Ft-1+α*(At-1 – Ft-1) = 50+0.2*(75-50) = 55
Ft = 55
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