Table 3 ANOVA of the fitting model for hydrogen production rate (HPR)
Source | Sum of squares | df | Mean of square | F-value | (Probability) probe >F |
|---|---|---|---|---|---|
Model | 33.80 | 9 | 3.76 | 12.33 | 0.0003 |
X1 | 2.16 | 1 | 2.16 | 7.09 | 0.0238 |
X2 | 1.66 | 1 | 1.66 | 5.45 | 0.0418 |
X3 | 0.084 | 1 | 0.084 | 0.27 | 0.6118 |
X1X2 | 0.00125 | 1 | 0.00125 | 0.0041 | 0.9502 |
X1X3 | 0.00125 | 1 | 0.00125 | 0.0041 | 0.9502 |
X2X3 | 0.031 | 1 | 0.031 | 0.10 | 0.7553 |
X 21 | 26.28 | 1 | 26.28 | 86.28 | <0.0001 |
X 22 | 5.32 | 1 | 5.32 | 17.48 | 0.0019 |
X 23 | 1.52 | 1 | 1.52 | 5.00 | 0.0494 |
Residual | 3.05 | 10 | 0.30 | Â | Â |
Lack of fit | 2.83 | 5 | 0.57 | 13.16 | 0.0067 |
Cor total | 36.85 | 19 | Â | Â | Â |
Coefficient of determination (R 2) = 0.9178 Adjusted determination coefficient (adj R 2) = 0.8434 | |||||