University Of Windsor

INDUSTRIAL & MANUFACTURING SYSTEMS ENGINEERING

91-503-01/92-590-61 Production & Inventory Control Fall 2013 Term

Assignment 1 (total 55 points)

Due time: October 3, 2013

Chapter 1

Question 1: Problem 30 on page 37 (15 points)

Question2: Problem 34 on page 38 (5 points)

Chapter 2

Question 3: Problem 24 on page 73 (10 points)

Question 4: Problem 30 on page 78 (10 points)

Question 5: Extra problem:(15 points)

ThreeStar, an online computer store, has had the following demand history

by quarters over a three-year period.

2005 demand 2006 demand 2007 demand

1 24 1 32 1 42

2 15 2 19 2 27

3 55 3 66 3 72

4 78 4 85 4 98

a. Determine the seasonal factors for each quarter by the method of

centered moving average

b. Based on the result of part (a), determine the deseasonalized demand

series.

c. Predict the demand for each quarter of 2008 by using regression

analysis to the deseasonalized series.