Question: Mean absolute percentage error (MAPE) Mean absolute deviation (MAD) Mean squared deviation (MSD) Problem 1 Observations of the demand for a spare part stocked at

Mean absolute percentage error (MAPE) Mean absolute deviation (MAD) Mean squared

Mean absolute percentage error (MAPE)

Mean absolute deviation (MAD)

Mean squared deviation (MSD)

Problem 1 Observations of the demand for a spare part stocked at a parts supply depot during the calendar year 2012 were Month Demand Month Demand January February March 95 July August September 221 234 284 62 135 April May June 211 October 281 199 276 November 192 December 302 a. Determine the one-step-ahead forecasts for the demand for January 2013 using 3- 6-, and 12-month moving averages b. Using a four-month moving average, determine the one-step-ahead forecasts for July through December 2012 c. Compute MAD, MSE, MAPE for the forecasts obtained in b Problem 1 Observations of the demand for a spare part stocked at a parts supply depot during the calendar year 2012 were Month Demand Month Demand January February March 95 July August September 221 234 284 62 135 April May June 211 October 281 199 276 November 192 December 302 a. Determine the one-step-ahead forecasts for the demand for January 2013 using 3- 6-, and 12-month moving averages b. Using a four-month moving average, determine the one-step-ahead forecasts for July through December 2012 c. Compute MAD, MSE, MAPE for the forecasts obtained in b

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