CHAPTER_15__PROBLEM_SOLUTIONS

CHAPTER_15__PROBLEM_SOLUTIONS - CHAPTER 15 PROBLEM...

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CHAPTER 15 PROBLEM SOLUTIONS 1 . a) and b) Month 3-Month 5-Month Average Sales Moving Average Moving Average Jan 9.00 Feb 7.00 Mar 10.00 Apr 8.00 8.67 May 7.00 8.33 Jun 12.00 8.33 8.20 Jul 10.00 9.00 8.80 Aug 11.00 9.67 9.40 Sep 12.00 11.00 9.60 Oct 10.00 11.00 10.40 Nov 14.00 11.00 11.00 Dec 16.00 12.00 11.40 Jan 13.33 12.60 c) Three month MAD _ 1.89, 5-month MAD = 2.43. The dealer should use the 3-month forecast for January because the smaller MAD indicates a more accurate forecast. 5. a) and b) Semester Enrollment 3-Semester Moving Average Exponentially Smoothed Forecast 1 400 2 450 400.00 3 350 410.00 4 420 400.00 398.00 5 500 406.67 402.40 6 575 423.33 421.92 7 490 498.33 452.53 8 650 5 21.67 460.00 9 571.67 498.02 c) 3-semester MAD _ 80.33; Exponentially Smoothed MAD = 87.16; 3-semester moving average appears to be slightly more accurate. 11.
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CHAPTER_15__PROBLEM_SOLUTIONS - CHAPTER 15 PROBLEM...

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