Compute the exponentially smoothed forecast of calls

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Reference no: EM131357716

Emergency calls to the 911 system of Durham, North Carolina, for the past 24 weeks are shown in the following table:

Week	1	2	3	4	5	6	7	8	9	10	11	12
Calls	50	35	25	40	45	35	20	30	35	20	15	40
Week	13	14	15	16	17	18	19	20	21	22	23	24
Calls	55	35	25	55	55	40	35	60	75	50	40	65

a) Compute the exponentially smoothed forecast of calls for each week. Assume an initial forecast of 50 calls in the first week, and use a = .2. What is the forecast for week 25?

b) Reforecast each period using a = .6.

c) Actual calls during week 25 were 85. Which smoothing constant provides a superior forecast? Explain and justify the measure of error you used.

Reference no: EM131357716

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