OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9780077835439
Author: Roger G Schroeder, M. Johnny Rungtusanatham, Susan Meyer Goldstein
Publisher: McGraw-Hill Education
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Chapter 10, Problem 11P
eXcel A grocery store sells the following number of frozen turkeys during the week prior to Thanksgiving:
| Turkeys Sold | |
| Monday | 50 |
| Tuesday | 53 |
| Wednesday | 65 |
| Thursday | 43 |
| Friday | 85 |
| Saturday | 101 |
- a. Prepare a
forecast of sales for each day, starting with F1 = 85 and α = .2. - b. Compute the MAD and the tracking signal in each period. Use MADo = 0.
- c. On the basis of the criteria given in the text, are the MAD and tracking signal within tolerances?
- d. Recompute parts a and b using α = .1, .3, and .4. Which value of α provides the best forecast?
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Students have asked these similar questions
The following table gives the number of pints of type A blood used at Damascus Hospital in the past 6 weeks:
Week of Pints Used
August 31 360
September 7 370
September 14 412
September 21 383
September 28 371
October 5 371
a) The forecasted demand for the week of October 12 using a 3-week moving average= {__] Pints (round your response to two decimal places).
A company has actual unit demand for four consecutive months of 105, 110, 106, and 108. The respective forecasts for the same four months were 100, 110, 110 and 105. At the end of month 4:
Which of the following is the resulting mean absolute deviation (MAD) that can be computed from this data?
Group of answer choices
3.0
2.5
1.0
4.0
-1.0
The following data are for calculator sales in units at an electronics store over the past nine weeks:
Week
1
2
3
4
5
Obtain the error measures. (Enter your responses rounded to two decimal places.)
CFE
MSE
Sales
Find the coefficient of determination (²).
The coefficient of determination r² = 0. (Enter your response rounded to two decimal places.)
44459
46
51
58
Use trend projection with regression to forecast sales for weeks 10-13. What are the error measures (CFE, MSE, 6, MAD, and MAPE) for this forecasting procedure? How about r²?
Obtain the trend projection with regression forecast for weeks 10-13. (Enter your responses rounded to two decimal places.)
Forecast, Ft
Period
10
11
12
13
Week
6
69809
7
Sales
54
63
53
61
MAD
U
MAPE
%
Chapter 10 Solutions
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
Ch. 10.S - Ace Hardware sells spare parts for lawn mowers....Ch. 10.S - eXcel The daily demand for chocolate donuts from...Ch. 10.S - The SureGrip Tire Company produces tires of...Ch. 10.S - eXcelManagement believes there is a seasonal...Ch. 10.S - Management of the ABC Floral Shop believes that...Ch. 10 - Prob. 1DQCh. 10 - What is the distinction between forecasting and...Ch. 10 - Qualitative forecasting methods should be used...Ch. 10 - Describe the uses of qualitative, time-series, and...Ch. 10 - Qualitative forecasts and causal forecasts are not...
Ch. 10 - Prob. 6DQCh. 10 - What are the advantages of exponential smoothing...Ch. 10 - How should the choice of be made for exponential...Ch. 10 - Prob. 9DQCh. 10 - Prob. 10DQCh. 10 - Explain how CPFR can be used to reduce forecasting...Ch. 10 - Under what circumstances might CPFR be useful, and...Ch. 10 - Daily demand for marigold flowers at a large...Ch. 10 - The number of daily calls for the repair of Speedy...Ch. 10 - 3-The ABC Floral Shop sold the following number of...Ch. 10 - The Handy Dandy Department Store had forecast...Ch. 10 - 5-The Yummy Ice Cream Company uses the exponential...Ch. 10 - Using the data in problem 2, prepare exponentially...Ch. 10 - Compute the errors of bias and absolute deviation...Ch. 10 - eXcel At the ABC Floral Shop, an argument...Ch. 10 - Only a portion of the following table for...Ch. 10 - A candy store has sold the following number of...Ch. 10 - eXcel A grocery store sells the following number...Ch. 10 - Prob. 12PCh. 10 - The Easyfit tire store had demand for tires shown...Ch. 10 - Prob. 14P
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