# Classify the manufacturing systems

May 29th, 2015
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PRODUCTIVITY MEASURES 1. Productivity Productivity = Output Output_____ Input Input X hrs of work 2. Partial Measures Productivity = Output___ Single Input

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PRODUCTION MANAGEMENT FORMULASFORECASTING1. Nave ApproachForecast for a certain period is equal to the actual demand/sale of the previous.Example:ActualForecastJune 55July 60 55Or 60-55 = 5 therefore forecast for July is 65 (60 +5).2. Simple Moving AverageFt = At- nWhere:At- = actual value (e.g demand per period) n = no. of period Ft = forecast for a period3. Weighted AverageFt = (Weight)(At1) + (Weight)(At2) + (Weight)(At3) +4. Exponential SmoothingFt = Ft-1 + (At-1 - Ft-1) Where:Ft = forecast for a periodFt-1 = forecast of the previous period = smoothing constant At-1 = actual demand/sales for the previous period.5. Linear EquationY = b0 + b1XWhere:

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