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•.. 4.9 Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the past 12 months were as follows: MONTH PRICE PER CHIP ($) January 1.80 February 1.67 March 1.70 April 1.85 May 1.90 June 1.87 July 1.80 August 1.83 September 1.70 October 1.65 November 1.70 December 1.75 a. Use a 2-month moving average on all the data and plot the averages and the prices. b. Use a 3-month moving average and add the 3-month plot to the graph created in part (a). c. Which is better (using the mean absolute deviation): the 2-month average or the 3-month average? d. Compute the forecasts for each month using exponential smoothing, with an initial forecast for January of $1.80. Use a = .1, then a = .3, and finally a = .5. Using MAD, which a is the best? Px (MyLab Operations Management also includes a shorter (brief) version of this problem.)

•.. 4.9 Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the past 12 months were as follows: MONTH PRICE PER CHIP ($) January 1.80 February 1.67 March 1.70 April 1.85 May 1.90 June 1.87 July 1.80 August 1.83 September 1.70 October 1.65 November 1.70 December 1.75 a. Use a 2-month moving average on all the data and plot the averages and the prices. b. Use a 3-month moving average and add the 3-month plot to the graph created in part (a). c. Which is better (using the mean absolute deviation): the 2-month average or the 3-month average? d. Compute the forecasts for each month using exponential smoothing, with an initial forecast for January of $1.80. Use a = .1, then a = .3, and finally a = .5. Using MAD, which a is the best? Px (MyLab Operations Management also includes a shorter (brief) version of this problem.)

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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4.9 Lenovo uses ZX-81 chip in some.......please write clearly I am 60 years old and hard to ready sometimes thank you!

•.• 4.9 Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the past 12 months were as follows: MONTH PRICE PER CHIP ($) January 1.80 February 1.67 March 1.70 April 1.85 May 1.90 June 1.87 July 1.80 August 1.83 September 1.70 October 1.65 November 1.70 December 1.75 a. Use a 2-month moving average on all the data and plot the averages and the prices. b. Use a 3-month moving average and add the 3-month plot to the graph created in part (a). c. Which is better (using the mean absolute deviation): the 2-month average or the 3-month average? d. Compute the forecasts for each month using exponential smoothing, with an initial forecast for January of $1.80. Use a = .1, then a = .3, and finally a = .5. Using MAD, which a is the best? Px (MyLab Operations Management also includes a shorter (brief) version of this problem.)
Transcribed Image Text:•.• 4.9 Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the past 12 months were as follows: MONTH PRICE PER CHIP ($) January 1.80 February 1.67 March 1.70 April 1.85 May 1.90 June 1.87 July 1.80 August 1.83 September 1.70 October 1.65 November 1.70 December 1.75 a. Use a 2-month moving average on all the data and plot the averages and the prices. b. Use a 3-month moving average and add the 3-month plot to the graph created in part (a). c. Which is better (using the mean absolute deviation): the 2-month average or the 3-month average? d. Compute the forecasts for each month using exponential smoothing, with an initial forecast for January of $1.80. Use a = .1, then a = .3, and finally a = .5. Using MAD, which a is the best? Px (MyLab Operations Management also includes a shorter (brief) version of this problem.)
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