Table 2.
Analysis of variance of regression equation and coefficients.
| Source | Sum of Squares |
d f | Mean Square |
F-value | p-value | |
|---|---|---|---|---|---|---|
| Model | 859.69 | 9 | 95.52 | 9.541 | 0.003 | significant |
| A-Reaction time | 79.34 | 1 | 79.34 | 7.92 | 0.020 | |
| B-Ultrasonic power | 37.63 | 1 | 37.63 | 3.76 | 0.093 | |
| C-Hydrogen peroxide concentration | 208.99 | 1 | 208.99 | 20.88 | 0.002 | |
| AB | 192.90 | 1 | 192.90 | 19.27 | 0.003 | |
| AC | 25.29 | 1 | 25.29 | 2.53 | 0.155 | |
| BC | 0.094 | 1 | 0.09 | 0.01 | 0.925 | |
| A2 | 12.57 | 1 | 12.57 | 1.25 | 0.299 | |
| B2 | 69.44 | 1 | 69.44 | 6.94 | 0.033 | |
| C2 | 271.72 | 1 | 271.72 | 27.14 | 0.001 | |
| Residual | 70.07 | 7 | 10.01 | |||
| Lack of fit | 67.76 | 3 | 22.59 | 39.10 | 0.002 | Not significant |
| Pure error | 2.31 | 4 | 0.58 | |||
| Cor Total | 929.77 | 16 |