Answered: Month Sales Month Sales 105 7 145 2 135…

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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Question

The following time series shows the sales of a particular product over the past 12 months.

a. Construct a time series plot. What type of pattern exists in the data?
b. Use a 5 0.3 to compute the exponential smoothing values for the time series.
c. Use trial and error to find a value of the exponential smoothing coefficient a that
results in a relatively small MSE.

Month
Sales
Month
Sales
105
7
145
2
135
8
140
3
120
100
4
105
10
80
5
90
11
100
6
120
12
110

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