Calls to a college emergency hotline for the past 29 months are as follows: Month Calls Month Calls 1 45 16 50 2 30 17 50 3 20 18 35 4 35 19 30 5 40 20 55 6 30 21 70 7 15 22 45 8 25 23 35 9 30 24 37 10 15 25 46 11 10 26 17 12 35 27 33 13 50 28 40 14 30 29 60 15 20 a) Create a time series plot. b) Develop a six period moving average. What is the forecast for month 30? c) Develop an exponential smoothing forecast with a smoothing constant of 0.65. What is the forecast for month 30? d) Calculate the MAD, MSE, and MAPE for each model in problems b, and c. Which model is the better predictor? e) Actual calls during month 30 were 55. Which model is the better predictors? Explain.
Calls to a college emergency hotline for the past 29 months are as follows: Month Calls Month Calls 1 45 16 50 2 30 17 50 3 20 18 35 4 35 19 30 5 40 20 55 6 30 21 70 7 15 22 45 8 25 23 35 9 30 24 37 10 15 25 46 11 10 26 17 12 35 27 33 13 50 28 40 14 30 29 60 15 20 a) Create a time series plot. b) Develop a six period moving average. What is the forecast for month 30? c) Develop an exponential smoothing forecast with a smoothing constant of 0.65. What is the forecast for month 30? d) Calculate the MAD, MSE, and MAPE for each model in problems b, and c. Which model is the better predictor? e) Actual calls during month 30 were 55. Which model is the better predictors? Explain.
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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Calls to a college emergency hotline for the past 29 months are as follows:
|
Month |
Calls |
Month |
Calls |
|
1 |
45 |
16 |
50 |
|
2 |
30 |
17 |
50 |
|
3 |
20 |
18 |
35 |
|
4 |
35 |
19 |
30 |
|
5 |
40 |
20 |
55 |
|
6 |
30 |
21 |
70 |
|
7 |
15 |
22 |
45 |
|
8 |
25 |
23 |
35 |
|
9 |
30 |
24 |
37 |
|
10 |
15 |
25 |
46 |
|
11 |
10 |
26 |
17 |
|
12 |
35 |
27 |
33 |
|
13 |
50 |
28 |
40 |
|
14 |
30 |
29 |
60 |
|
15 |
20 |
|
|
a) Create a time series plot.
b) Develop a six period moving average. What is the forecast for month 30?
c) Develop an exponential smoothing forecast with a smoothing constant of 0.65. What is the forecast for month 30?
d) Calculate the MAD, MSE, and MAPE for each model in problems b, and c. Which model is the better predictor?
e) Actual calls during month 30 were 55. Which model is the better predictors? Explain.
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