The table below shows the sales figures for a brand of shoe over the last 12 months. Sales Months January February March April May June July August September October 69 75 86 92 95 100 108 115 125 131 140 150 November December a. Using the following, forecast the sales for the months up to January the following year:- i. A simple three month moving average. [2 marks] ii. A three period weighted moving average using weights of 1, 2 and 3. Assign the highest weight to the most recent data. [3 marks] iii. Exponential Smoothing when a= .6 and the forecast for March is 350. [5 marks] iv. Determine which of the three forecasting technique is the most accurate using MAD. [4 marks]