Table 4 The generated model analysis results
Design type | Central composite | D-optimal |
|---|---|---|
Significance | Significant | Significant |
P < 0.0001 | P < 0.0001 | |
Model type | Quadratic | Quadratic |
R-squared | 0.9991 | 0.9210 |
Adjusted R-squared | 0.9984 | 0.8736 |
Predicted R-squared | 0.9935 | 0.7921 |
Adequate precision | 122.830 | 14.161 |
Generated equation | \(\begin{aligned} & {\text{Floating Lag Time}} = - {7828}{\text{.09234}} \\ & \quad + {1007}{\text{.19857 * OG}}\;{\text{concentration}} \\ & \quad + {880}{\text{.39460 * HPMC K15M}} \\ & \quad + {1364}{\text{.29190 * Xanthan}}\;{\text{Gum}} \\ & \quad - {15}{\text{.58000 * OG}}\;{\text{concentration * HPMC K15M}} \\ & \quad - {11}{\text{.00000 * OG}}\;{\text{concentration * Xanthan}}\;{\text{Gum}} \\ & \quad - {2}{\text{.75000 * HPMC K15M * Xanthan}}\;{\text{Gum}} \\ & \quad + {4}{\text{.43181 * OG}}\;{\text{concentration}}^{{2}} \\ & \quad - {43}{\text{.99831 * HPMC K15M}}^{{2}} \\ & \quad - {125}{\text{.72119 * Xanthan}}\;{\text{Gum}}^{{2}} \\ \end{aligned}\) | \(\begin{aligned} & {\text{Floating Lag Time}} = + {76}{\text{.99172}} \\ & \quad + {26}{\text{.21690 * OG}}\;{\text{concentration}} \\ & \quad - {27}{\text{.47543 * HPMCK15M}} \\ & \quad + {1}{\text{.21784 * Xanthan}}\;{\text{Gum}} \\ & \quad - {16}{\text{.51078 * OG}}\;{\text{concentration * HPMCK15M}} \\ & \quad - {10}{\text{.24740 * OG}}\;{\text{concentration * Xanthan}}\;{\text{Gum}} \\ & \quad - {2}{\text{.74859 * HPMCK15M * Xanthan}}\;{\text{Gum}} \\ & \quad + {17}{\text{.47349 * OG}}\;{\text{concentration}}^{{2}} \\ & \quad + {4}{\text{.43398 * HPMCK15M}}^{{2}} \\ & \quad - {1}{\text{.65511 * Xanthan}}\;{\text{Gum}}^{{2}} \\ \end{aligned}\) |