| Source | Sum of Squares | Degrees of freedom | Mean sum of squares |
| Model | 15.169 | 4 | 3.7922 |
| Residual | 141.112 | 31 | 4.5520 |
| Total | 156.281 | 35 | 4.4651 |
| No of observations = 36 | |||
| R Square = 83% | |||
| Adjusted R Square = 81.4% | |||