Question: A B D E F G H I L M N 1 Forecast the demand and calculate the overall forecast error measures (MAD, MSE, MAPE)

A B D E F G H I L M N 1 Forecast the demand and

A B D E F G H I L M N 1 Forecast the demand and calculate the overall forecast error measures (MAD, MSE, MAPE) in the following table using 3-month weighted moving average approach. 2 2 3 3 Data Forecast Error Analysis 4 Month tDemand Forecast Error Absolute Squared Abs Pct Err Weights 5 January 1 1200 2 6 February 2 1000 5 7 March 3 1100 10 8 April 4 1250 9 May 5 5 1300 10 June 6 980 11 July 7 1010 12 August 8 1050 13 September 9 1120 14 October 10 1300 15 November 11 1000 16 December 12 1025 17 January 13 990 18 February 14 999 19 March 15 1037 20 April 16 1225 21 May 17 22 Average 23 MAD MSE MAPE 24 25 1

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