Response 02 | BG adsorption | ||||

ANOVA for selected factorial model | |||||

Source | Sum of | Mean | F | p-value | Squaresdf Square Value Prob > F |

Model 407.00 | 5 | 81.4 | 65.12 | 0.0152 | significant |

A-Contact Time 72.00 | 1 | 72 | 57.6 | 0.0169 | |

B-Dosage 180.50 | 1 | 180.5 | 144.4 | 0.0069 | |

C-pH 98.00 | 1 | 98 | 78.4 | 0.0125 | |

AC 24.50 | 1 | 24.5 | 19.6 | 0.0474 | |

BC 32.00 | 1 | 32 | 25.6 | 0.0369 | |

Residual 2.50 | 2 | 1.25 | |||

Cor Total 409.50 | 7 | ||||

Std. Dev. | 1.12 | R-Squared | 0.9939 | ||

Mean 85.25 | Adj R-Squared | 0.9786 | |||

C.V. % | 1.31 | Pred R-Squared | 0.9023 | ||

PRESS | 40 | Adeq Precision | 23.238 | ||

The “Pred R-Squared” of 0.9023 is in reasonable agreement with the “Adj R-Squared” of 0.9786. | |||||

Coefficient | Standard | 95% CI | 95% CI | ||

Factor Estimate | df | Error | Low | High | VIF |

Intercept 85.25 | 1 | 0.4 | 83.55 | 86.95 | |

A-Contact Time 3.00 | 1 | 0.4 | 1.3 | 4.7 | 1 |

B-Dosage 4.75 | 1 | 0.4 | 3.05 | 6.45 | 1 |

C-pH 3.50 | 1 | 0.4 | 1.8 | 5.2 | 1 |

AC-1.75 | 1 | 0.4 | −3.45 | −0.049 | 1 |

BC 2.00 | 1 | 0.4 | 0.3 | 3.7 | 1 |