D) Calculate three forecasts using the following data. First, for periods 4 through 10, develop the exponentially smoothed forecasts using a forecast for period 3 (F3) of 45.0 and an alpha of 0.4. Second, calculate the three-period moving-average forecast for periods 4 through 10. Third, calculate the weighted moving average for periods 4 through 10, using weights of .70, .20, and .10, with 0.70 applied to the most recent data. Calculate the mean absolute deviation (MAD) and the cumulative sum of forecast error (CFE) for each forecasting procedure. Which forecasting procedure would you select? Why? (3 +4 + 5 +5 +2 marks)

Month	Demand
1	45
2	48
3	43
4	48
5	49
6	54
7	47
8	50
9	46
10	47

). A restaurant has tracked the number of meals served at lunch over the last four weeks. The data show little in terms of trends, but do display substantial variation by day of the week. Use the following information to determine the seasonal (daily) indices for this restaurant. Round all numbers in your calculations to four decimal places. (10 marks

	Week				AVERAGE	AVG Monthly	SEASONAL INDEX
Day	1	2	3	4
Sunday	40	35	39	43
Monday	54	55	51	59
Tuesday	61	60	65	64
Wednesday	72	77	78	69
Thursday	89	80	81	79
Friday	91	90	99	95
Saturday	80	82	81	83
TOTAL
OVERALL AVERAGE