# A manufacturing firm seeks to develop a better forecast for an important product, and believes that there

## Question:

a. What is your forecast for December of Year 4, making period 1 as the starting period for the regression?

b. The actual demand for period 48 was just learned to be 5,100. Add this demand to the Inputs file and change the starting period for the regression to period 2 so that the number of periods in the regression remains unchanged. How much or little does the forecast for period 49 change from the one for period 48? The error measures? Are you surprised?

c. Now change the time when the regression starts to period 25 and repeat the process. What differences do you note now? What forecast will you make for period49?

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**Related Book For**

## Operations Management Processes and Supply Chains

**ISBN:** 978-0132807395

10th edition

**Authors:** Lee J. Krajewski, Larry P. Ritzman, Manoj K. Malhotra