еВook Consider the following time series data: Month 1 2 3 4 5 7 Value 24 15 21 13 19 21 16

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Please find (b), (c), and (e)

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Consider the following time series data:
Month
1
2
3
4
7
Value
24
15
21
13
19
21
16
(a) Choose the correct time series plot.
(i)
30
25
20
15
10
5
1
2
3
4
6
Month
(ii)
30
25
20
Value
Transcribed Image Text:Check My Work (No more tries available) еВook Consider the following time series data: Month 1 2 3 4 7 Value 24 15 21 13 19 21 16 (a) Choose the correct time series plot. (i) 30 25 20 15 10 5 1 2 3 4 6 Month (ii) 30 25 20 Value
1
2
3
Month
Graph (i)
What type of pattern exists in the data?
Horizontal pattern
(b) Develop a three-month moving average for this time series. Compute MSE and a forecast for month 8.
If required, round your answers to two decimal places, Do not round intermediate calculation.
MSE:
14.00
The forecast for month 8:
18.67
(c) Use a = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for month 8.
If required, round your answers to two decimal places. Do not round intermediate calculation,
MSE:
5.00
The forecast for month 8:
19.32
(d) Compare the three-month moving average forecast with the exponential smoothing forecast using a = 0.2. Which appears to provide the better forecast based on MSE?
3-month moving average
(e) Use trial and error to find a value of the exponential smoothing coefficient a that results in the smallest MSE.
If required, round your answer to two decimal places.
a
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Transcribed Image Text:1 2 3 Month Graph (i) What type of pattern exists in the data? Horizontal pattern (b) Develop a three-month moving average for this time series. Compute MSE and a forecast for month 8. If required, round your answers to two decimal places, Do not round intermediate calculation. MSE: 14.00 The forecast for month 8: 18.67 (c) Use a = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for month 8. If required, round your answers to two decimal places. Do not round intermediate calculation, MSE: 5.00 The forecast for month 8: 19.32 (d) Compare the three-month moving average forecast with the exponential smoothing forecast using a = 0.2. Which appears to provide the better forecast based on MSE? 3-month moving average (e) Use trial and error to find a value of the exponential smoothing coefficient a that results in the smallest MSE. If required, round your answer to two decimal places. a " Hide Feedback Partially Correct Check My Work (No more tries available)
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