Minitab Solution Printout for the Water/Temperature/Time Mowing example.
The Session Part of the Screen Should Say
Stepwise Regression: Water Consumption versus Temperature, Time Mowed
* The printout gives you more information than what is listed below. We will interpret more of the data later in the rest of the tutorial.*
Alpha-to-Enter: 0.15 Alpha-to-Remove: 0.15
Response is Water Co on 2 predictors, with N = 7
| Step | 1 | 2 |
| Constant | -96.85 | -121.65 |
| Temperature | 1.451 | 1.512 |
| T-Value | 7.97 | 24.89 |
| P-Value | 0.001 | 0.000 |
| Time Mow | 12.5 | |
| T-Value | 6.48 | |
| P-Value | 0.003 | |
| S | 3.78 | 1.24 |
| R-Sq | 92.70 | 99.37 |
| R-Sq(adj) | 91.24 | 99.05 |
| C-p | 43.0 | 3.0 |
| PRESS | 172.265 | 21.2702 |
| R-Sq(pred) | 82.37 | 97.82 |
Solution
Interpretation
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