Using exponential smoothing, calculate the forecasts for months 2, 3, 4, 5, and 6. Thesmoothing constant is 0.2, and the old forecast for month 1 is 245. YearQuarter14Total1221088190401213010073963993132987199400Average1281027595400140130Average Demand120110+100+90 +80Actual Demand7060 +2478QUARTERS6.101112FIGURE 8.6 Seasonal sales history.DEMAND MonthActual DemandForecast Demand126022303225424552506

Solution: Given information: α=0.2 Smoothing constant The forecast for month one is 245

Answered: Year Quarter 1 4 Total 122 108 81 90…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Using exponential smoothing, calculate the forecasts for months 2, 3, 4, 5, and 6. The
smoothing constant is 0.2, and the old forecast for month 1 is 245.

Year
Quarter
1
4
Total
122
108
81
90
401
2
130
100
73
96
399
3
132
98
71
99
400
Average
128
102
75
95
400
140
130
Average Demand
120
110+
100+
90 +
80
Actual Demand
70
60 +
2
4
7
8
QUARTERS
6.
10
11
12
FIGURE 8.6 Seasonal sales history.
DEMAND

Month
Actual Demand
Forecast Demand
1
260
2
230
3
225
4
245
5
250
6

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