A local retailer is thinking of using exponential smoothing to forecast one of his well-selling products. His problem is that he is not sure if he should use a low or a high value of a. For this reason, he uses the historical data available and tries with values for a = 0.1 and a = 0.2 to find which value for a will give a smaller MAD. What are the MAD values he would arrive at?

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WEEK 1 2 3 4 5 6 7 8 00 9 10 11 ACTUAL SALES 95 110 120 98 112 95 105 130 70 80 110