Table 3. Analysis of Variance (ANOVA) for the Response.
| source | sum of squares | Df | mean square | F value | p-value Prob > F |
|---|---|---|---|---|---|
| model | 26.56 | 14 | 1.90 | 5.19 | 0.0020 |
| A | 5.66 | 1 | 5.66 | 15.47 | 0.0015 |
| B | 14.03 | 1 | 14.03 | 38.38 | <0.0001 |
| C | 0.97 | 1 | 0.97 | 2.66 | 0.1252 |
| D | 1.33 | 1 | 1.33 | 3.63 | 0.0775 |
| A*B | 0.17 | 1 | 0.17 | 0.48 | 0.5008 |
| A*C | 0.13 | 1 | 0.13 | 0.36 | 0.5588 |
| A*D | 0.15 | 1 | 0.15 | 0.41 | 0.5347 |
| B*C | 1.63 | 1 | 1.63 | 4.46 | 0.0532 |
| B*D | 0.089 | 1 | 0.089 | 0.24 | 0.6304 |
| C*D | 0.38 | 1 | 0.38 | 1.03 | 0.3271 |
| A*A | 1.62 | 1 | 1.62 | 4.43 | 0.0538 |
| B*B | 0.009819 | 1 | 0.009819 | 0.027 | 0.8722 |
| C*C | 0.0004498 | 1 | 0.0004498 | 0.00123 | 0.9725 |
| D*D | 0.41 | 1 | 0.41 | 1.12 | 0.3070 |
| residual | 5.12 | 14 | 0.37 | ||
| lack-of-fit | 4.84 | 10 | 0.48 | 6.94 | 0.0385 |
| pure error | 0.28 | 4 | 0.070 | ||
| cor total | 31.68 | 28 |