| Df | Deviance | Residual Df | Residual deviance | F value | P value |
---|
Null | 1 | Â | 34 | 16.451 | Â | Â |
Poly (elevation, 3) | 3 | 4.511 | 31 | 11.940 | 3.904 | 0.017 |
- Residuals were obtained after removing effect of area and mid-domain effect in the model. Function “poly” represents a cubic transformation of the explanatory variable. This function also contains both linear and polynomial effects