Erickson - Chapter 4 Problems-Jan10

Erickson - Chapter 4 Problems-Jan10 - 18.2 21 2 3.67 4.8 2...

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April Erickson Chapter 4 Problems 4.6, 4.12 4.6 a) Month Sales January 20 February 21 March 15 April 14 May 13 June 16 July 17 August 18 September 20 October 20 November 21 December 23 b) Month Sales Naïve 3 Month MA 6 Month MA Exp Smoothing MAD-Naïve MAD - 3 Mo MA MAD - 6 Mo MA MAD - Exp Sm January 20 February 21 20 1 March 15 21 6 April 14 15 13.67 1 0.33 May 13 14 18.67 1 5.67 June 16 13 16.67 3 0.67 July 17 16 14 13.8 1 3 3.2 August 18 17 14.33 15.8 1 3.67 2.2 September 20 18 15.33 15.9 2 4.67 4.1 October 20 20 17 16.2 18.6 0 3 3.8 1.4 November 21 20 18.33 17.3 19.58 1 2.67 3.7 1.42 December 23 21 19.33
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Unformatted text preview: 18.2 21 2 3.67 4.8 2 23 20.33 19.4 Weights: Alpha 0.1 0.3 0.1 0.1 Sept forecast 0.2 18 0.2 0.3 ES 1 Ft=Ft-1 + a(At-1 - Ft-1) 4.12 Day Actual Forecast Monday 88 88 Tuesday 72 88 88 Wednesday 68 84 84 Thursday 48 80 80 Friday 72 a=0.25 Using Exponential Smoothing, the Big Mac demand forecasted for Friday is 72. January March May July September November 5 10 15 20 25 Sales Sales...
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This note was uploaded on 05/22/2010 for the course SCI 123 taught by Professor Smith during the Spring '10 term at Kirkwood Community College.

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