| Source | Expansion ratio (ER) | Bulk density (BD) | ||||
| Sum of squares | df | Probability (P) > F | Sum of squares | df | Probability (P) > F | |
| Model | 0.05 | 9 | <0.0001 | 0.03 | 9 | <0.0001 |
| Residual | 0.009 | 7 | 0.0005 | 7 | ||
| Lack of fit | 0.003 | 3 | 0.6040 | 0.0002 | 3 | 0.5011 |
| Pure error | 0.006 | 4 | 0.0003 | 4 | ||
| Total | 0.51 | 16 | 0.030 | 16 | ||