Ops Mgmt 8e ch04pp

Ops Mgmt 8e ch04pp - Practice Problems Chapter 4...

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Practice Problems: Chapter 4, Forecasting Problem 1: Auto sales at Carmen’s Chevrolet are shown below. Develop a 3-week moving average. Week Auto Sales 1 8 2 10 3 9 4 11 5 10 6 13 7 - Problem 2: Carmen’s decides to forecast auto sales by weighting the three weeks as follows: Weights Applied Period 3 Last week 2 Two weeks ago 1 Three weeks ago 6 Total Problem 3: A firm uses simple exponential smoothing with α = 01 . to forecast demand. The forecast for the week of January 1 was 500 units whereas the actual demand turned out to be 450 units. Calculate the demand forecast for the week of January 8. 1

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Problem 4: Exponential smoothing is used to forecast automobile battery sales. Two value of α are examined, = 0 8 . and = 0 5 . . Evaluate the accuracy of each smoothing constant. Which is preferable? (Assume the forecast for January was 22 batteries.) Actual sales are given below: Month Actual Battery Sales Forecast January 20 22 February 21 March 15 April 14 May 13 June 16 2
Problem 5: Use the sales data given below to determine: (a) the least squares trend line, and (b) the predicted value for 2003 sales. Year

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This note was uploaded on 08/29/2009 for the course BSOP BUSN taught by Professor Unknown during the Spring '09 term at DeVry Addison.

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Ops Mgmt 8e ch04pp - Practice Problems Chapter 4...

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