The number of internal disk drives (in million) made at a plant in Taiwan during the past 5 years follows: Year Disk Drives 1 142 2 156 3 184 4 204 5 210 a) Using simple linear regression the forecast for the number of disk drives to be made next year= 234.4 disk drives b) The mean squared error (mse) when using simple linear regression=[___] drives^2 (round your response to one decimal place)
The number of internal disk drives (in million) made at a plant in Taiwan during the past 5 years follows:
Year Disk Drives
1 142
2 156
3 184
4 204
5 210
a) Using simple linear regression the
b) The mean squared error (mse) when using simple linear regression=[___] drives^2 (round your response to one decimal place)
a. Forecast using simple linear regression:
| Year (X) | Disks (Y) | ||
| 1 | 142 | 142 | 1 |
| 2 | 156 | 312 | 4 |
| 3 | 184 | 552 | 9 |
| 4 | 204 | 816 | 16 |
| 5 | 210 | 1050 | 25 |
| 15 | 896 | 2872 | 55 |
N=5
The linear equation is given by
Y = a+bX
Forecast for a period, Y = 124+18.4X
Forecast for the number of disk drives to be made next year,
Therefore, the forecast for next year is 234.4 disk drives
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