Question: - Problem #7, Parts a, b and c only pg-317 7. Sales for the past 12 months at Computer Success are given here. Month Sales

- Problem #7, Parts a, b and c only pg-317

- Problem #7, Parts a, b and c only pg-317 7.

7. Sales for the past 12 months at Computer Success are given here. Month Sales ($) Month Sales ($) January 3,000 July 6,300 February 3,400 August 7,200 March 3,700 September 6,400 April 4,100 October 4,600 May 4,700 November 4,200 June 5,700 December 3,900 a. Use a 3-month moving average to forecast the sales for the months May through December. b. Use a 4-month moving average to forecast the sales for the months May through December. C. Compare the performance of the two methods by using the mean absolute deviation as the performance criterion. Which method would you recommend

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