Compute the MAD and MAPE for the demand planner's method. 8 Marks

(20) QUESTION 2 Sales of car covers for Sam's AutoCare store in Durban over a 12-month period are shown in the table below. The demand planner prepared a forecast using a combination of exponential smoothing and their collective judgement for a 4-month period. Month Unit sales Forecast July 84 August 96 September 112 October 119 November 92 December 87 January 132 February 89 March 105 112 April 113 125 May 102 109 June 100 117 2.1. Compute the MAD and MAPE for the demand planner's method