The accompanying dataset provides data on the monthly usage of natural gas​ (in millions of cubic​ feet) for a certain region over two years. Implement the​ Holt-Winters multiplicative seasonality model with no trend to find the forecast for periods​ 13-26, where α=0.6and γ=0.9. Then find the MAD for periods​ 13-24. Use the​ Holt-Winters multiplicative seasonality model with no trend to find the forecast for periods​ 13-18, periods​ 19-24, and then for periods 25 and 26. ​(Type integers or decimals rounded to two decimal places as​ needed.) Period Forecast 13 enter your response here 14 enter your response here 15 enter your response here 16 enter your response here 17 enter your response here 18 enter your response here Month Period Gas Usage   Jan 1 250   Feb 2 234   Mar 3 149   Apr 4 140   May 5 54   Jun 6 33   Jul 7 31   Aug 8 28   Sep 9 29   Oct 10 40   Nov 11 89   Dec 12 195   Jan 13 234   Feb 14 242   Mar 15 253   Apr 16 137   May 17 35   Jun 18 32   Jul 19 26   Aug 20 25   Sep 21 29   Oct 22 38   Nov 23 83   Dec 24 192

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter13: Regression And Forecasting Models
Section13.7: Exponential Smoothing Models
Problem 28P: The file P13_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present...
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7, The accompanying dataset provides data on the monthly usage of natural gas​ (in millions of cubic​ feet) for a certain region over two years. Implement the​ Holt-Winters multiplicative seasonality model with no trend to find the forecast for periods​ 13-26, where α=0.6and γ=0.9. Then find the MAD for periods​ 13-24.

Use the​ Holt-Winters multiplicative seasonality model with no trend to find the forecast for periods​ 13-18, periods​ 19-24, and then for periods 25 and 26.
​(Type integers or decimals rounded to two decimal places as​ needed.)
Period
Forecast
13
enter your response here
14
enter your response here
15
enter your response here
16
enter your response here
17
enter your response here
18
enter your response here
Month
Period
Gas Usage
 
Jan
1
250
 
Feb
2
234
 
Mar
3
149
 
Apr
4
140
 
May
5
54
 
Jun
6
33
 
Jul
7
31
 
Aug
8
28
 
Sep
9
29
 
Oct
10
40
 
Nov
11
89
 
Dec
12
195
 
Jan
13
234
 
Feb
14
242
 
Mar
15
253
 
Apr
16
137
 
May
17
35
 
Jun
18
32
 
Jul
19
26
 
Aug
20
25
 
Sep
21
29
 
Oct
22
38
 
Nov
23
83
 
Dec
24
192
 
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