Source | Sum of squares | *df* | Mean square | *F* value | *p*-value |
---|

Prob > *F* |
---|

Model | 131.77 | 7 | 18.82 | 48.23 | \(< 0.0001^{\text{a}}\) |

*A*—methanol–oil ratio | 26.78 | 1 | 26.78 | 68.62 | \(< 0.0001^{\text{a}}\) |

*B*—catalyst loading | 77.18 | 1 | 77.18 | 197.75 | \(< 0.0001^{\text{a}}\) |

*C*—reaction time | 0.96 | 1 | 0.96 | 2.46 | \(0.1427^{\text{b}}\) |

*AC* | 6.59 | 1 | 6.59 | 16.88 | \(0.0014^{\text{a}}\) |

*BC* | 5.85 | 1 | 5.85 | 14.98 | \(0.0022^{\text{a}}\) |

\(A^{2}\) | 10.58 | 1 | 10.58 | 27.11 | \(0.0002^{\text{a}}\) |

\(B^{2}\) | 6.26 | 1 | 6.26 | 16.04 | \(0.0017^{\text{a}}\) |

Residual | 4.68 | 12 | 0.39 | | |

Lack of fit | 1.34 | 7 | 0.19 | 0.29 | \(0.9327^{\text{b}}\) |

\(R^{2} = 0.9657\) | | | | | |

^{a}Significant^{b}Not significant