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The weekly demand (in cases) for a particular brand of automatic dishwasher detergent for a chain of grocery stores located in Columbus, Ohio, follows. Week Demand O 1 2 3 4 5 30- 6 7 8 9 10 25+ 20 15- 10+ 5+ 0+ 22 0 18 23 21 17 24 20 (a) Construct a time series plot. 19 18 21 1 2 3 4 5 6 7 8 Week What type of pattern exists in the data? O The time series plot indicates a seasonal pattern. O The time series plot indicates a horizontal pattern. O The time series plot indicates a trend pattern. The time series plot indicates a cyclical pattern. cases 9 10 cases 30 T 25 20 15- 10+ 5+ 0 0 1 2 3 4 5 6 7 8 9 10 Week (b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) O 30 25 20 15- 10+ 5+ 0 0 1 2 3 4 5 6 7 8 9 10 Week (c) Use exponential smoothing with a smoothing constant of a 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) 20- F 15- 10+ 0- 01 23 4 5 30T 25+ 5- 6 7 8 9 10 Week

The weekly demand (in cases) for a particular brand of automatic dishwasher detergent for a chain of grocery stores located in Columbus, Ohio, follows. Week Demand O 1 2 3 4 5 30- 6 7 8 9 10 25+ 20 15- 10+ 5+ 0+ 22 0 18 23 21 17 24 20 (a) Construct a time series plot. 19 18 21 1 2 3 4 5 6 7 8 Week What type of pattern exists in the data? O The time series plot indicates a seasonal pattern. O The time series plot indicates a horizontal pattern. O The time series plot indicates a trend pattern. The time series plot indicates a cyclical pattern. cases 9 10 cases 30 T 25 20 15- 10+ 5+ 0 0 1 2 3 4 5 6 7 8 9 10 Week (b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) O 30 25 20 15- 10+ 5+ 0 0 1 2 3 4 5 6 7 8 9 10 Week (c) Use exponential smoothing with a smoothing constant of a 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) 20- F 15- 10+ 0- 01 23 4 5 30T 25+ 5- 6 7 8 9 10 Week

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The weekly demand (in cases) for a particular brand of automatic dishwasher detergent for a chain of grocery stores located in Columbus, Ohio, follows. O Week Demand (in cases) 30 25 20 15 1 0 2 3 10- 5 4 5 6 7 8 9 10 Demand 22 0 1 2 18 23 (a) Construct a time series plot. 21 17 24 20 8 19 18 21 3 4 5 6 Week What type of pattern exists in the data? cases 7 8 9 10 The time series plot indicates a seasonal pattern. O The time series plot indicates a horizontal pattern. O The time series plot indicates a trend pattern. O The time series plot indicates a cyclical pattern. cases 30- 25 20 15+ 10- 5 0 + 0 1 2 3 4 5 Week 6 7 8 (b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = 9 10 30 25 20+ 15 10+ 5+ 0 + 0 1 2 3 4 5 6 6 7 8 9 10 Week (c) Use exponential smoothing with a smoothing constant of a = 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = Demand (in cases) 301 25 20 15- 10+ 5+ 0 + 01 2 3 4 5 6 7 8 9 10 Week Ⓡ
Transcribed Image Text:The weekly demand (in cases) for a particular brand of automatic dishwasher detergent for a chain of grocery stores located in Columbus, Ohio, follows. O Week Demand (in cases) 30 25 20 15 1 0 2 3 10- 5 4 5 6 7 8 9 10 Demand 22 0 1 2 18 23 (a) Construct a time series plot. 21 17 24 20 8 19 18 21 3 4 5 6 Week What type of pattern exists in the data? cases 7 8 9 10 The time series plot indicates a seasonal pattern. O The time series plot indicates a horizontal pattern. O The time series plot indicates a trend pattern. O The time series plot indicates a cyclical pattern. cases 30- 25 20 15+ 10- 5 0 + 0 1 2 3 4 5 Week 6 7 8 (b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = 9 10 30 25 20+ 15 10+ 5+ 0 + 0 1 2 3 4 5 6 6 7 8 9 10 Week (c) Use exponential smoothing with a smoothing constant of a = 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = Demand (in cases) 301 25 20 15- 10+ 5+ 0 + 01 2 3 4 5 6 7 8 9 10 Week Ⓡ
(b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = cases (c) Use exponential smoothing with a smoothing constant of a = 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 cases = (d) Which of the two methods do you prefer? Why? O The 3-week moving average is preferable since it has a larger MSE compared to exponential smoothing with a = 0.3. Exponential smoothing with a = 0.3 is preferable since it has a smaller MSE compared to the 3-week moving average. Exponential smoothing with a = 0.3 is preferable since it has a larger MSE compared to the 3-week moving average. O The 3-week moving average is preferable since it has a smaller MSE compared to exponential smoothing with a = 0.3.
Transcribed Image Text:(b) Use a three-week moving average to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 = cases (c) Use exponential smoothing with a smoothing constant of a = 0.3 to develop a forecast (in cases) for week 11. (Round your answer to two decimal places.) F11 cases = (d) Which of the two methods do you prefer? Why? O The 3-week moving average is preferable since it has a larger MSE compared to exponential smoothing with a = 0.3. Exponential smoothing with a = 0.3 is preferable since it has a smaller MSE compared to the 3-week moving average. Exponential smoothing with a = 0.3 is preferable since it has a larger MSE compared to the 3-week moving average. O The 3-week moving average is preferable since it has a smaller MSE compared to exponential smoothing with a = 0.3.
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