| model | square sum | df | mean square | F | Sig. | |
| 1 | regression | 70.997 | 1 | 70.997 | 112.772 | 0.000b |
| residual | 73.029 | 116 | 0.630 |
|
| |
| total | 144.027 | 117 |
|
|
| |
| 2 | regression | 49.165 | 1 | 49.165 | 47.329 | 0.000b |
| residual | 120.499 | 116 | 1.039 |
|
| |
| total | 169.664 | 117 |
|
|
| |
| 3 | regression | 36.751 | 1 | 36.751 | 39.739 | 0.000b |
| residual | 107.276 | 116 | 0.925 |
|
| |
| total | 144.027 | 117 |
|
|
| |
| 4 | regression | 74.278 | 2 | 37.139 | 61.234 | 0.000b |
| residual | 69.749 | 115 | 0.607 |
|
| |
| total | 144.027 | 117 |
|
|
| |