Peter is decomposing a time series using least squares regression. When entering the data into the Excel spreadsheet, he made a mistake (only one error). What data did he enter incorrectly? Year 1 1 1 1 NNNNH 2 2 2 2 3 3 3 3 Quarter, X 1 2 3 4 5 6 7 8 9 10 11 12 Actual Demand, y 7012 8546 6697 5638 4896 6296 5577 4118 4335 5107 4290 3900 Seasonal index Actual Demand, Quarter 4 of year 3 Seasonal Index, Quarter 2 of year 3 Actual Demand, quarter 1 of Year 1 Seasonal Index, quarter 1 of Year 2 Seasonal Index, quarter 2 of year 3 1.05 1.16 0.89 1.56 0.89 1.16 0.89 1.56 1.05 1.16 0.89 1.56
Peter is decomposing a time series using least squares regression. When entering the data into the Excel spreadsheet, he made a mistake (only one error). What data did he enter incorrectly? Year 1 1 1 1 NNNNH 2 2 2 2 3 3 3 3 Quarter, X 1 2 3 4 5 6 7 8 9 10 11 12 Actual Demand, y 7012 8546 6697 5638 4896 6296 5577 4118 4335 5107 4290 3900 Seasonal index Actual Demand, Quarter 4 of year 3 Seasonal Index, Quarter 2 of year 3 Actual Demand, quarter 1 of Year 1 Seasonal Index, quarter 1 of Year 2 Seasonal Index, quarter 2 of year 3 1.05 1.16 0.89 1.56 0.89 1.16 0.89 1.56 1.05 1.16 0.89 1.56
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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
Transcribed Image Text:Peter is decomposing a time series using least squares regression.
When entering the data into the Excel spreadsheet, he made a
mistake (only one error). What data did he enter incorrectly?
Year
1
1
1
1
WNNNN
2
2
2
2
3
33
3
Quarter,
x
1
2
3
4
5
6
7
8
9
10
11
12
Actual
Demand, y
7012
8546
6697
5638
4896
6296
5577
4118
4335
5107
4290
3900
Seasonal index
Actual Demand, Quarter 4 of year 3
Seasonal Index, Quarter 2 of year 3
Actual Demand, quarter 1 of Year 1
Seasonal Index, quarter 1 of Year 2
Seasonal Index, quarter 2 of year 3
1.05
1.16
0.89
1.56
0.89
1.16
0.89
1.56
1.05
1.16
0.89
1.56
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