In the regression process of the linear model, SPSS performed eight steps, and the coefficients of the regression equation are given in Table 1. As shown in Table 1, the six factors of *PT, DD, WPH, QAC, SS,* and *CCS* were included in the linear regression equation, and their *t*-values all exceeded *t _{0.05/2}* (2.009). In the column of significance analysis, all of the Sig. values were lower than 0.05, indicating that the significance levels evaluated by the

Table 1

Linear model (Dependent variable R_{i})
. | Unstandardized coefficients . | Standardized coefficient . | t
. | Sig. . | Collinearity statistics . | ||
---|---|---|---|---|---|---|---|

B . | Std. Err. . | Beta . | Tolerance . | VIF . | |||

Step 8 | |||||||

(Constant) | 114.859 | 23.607 | 4.865 | 0.000 | |||

PT | 0.673 | 0.080 | 0.680 | 8.445 | 0.000 | 0.915 | 1.093 |

DD | −77.908 | 16.053 | −0.381 | −4.853 | 0.000 | 0.964 | 1.038 |

WPH | 0.199 | 0.052 | 0.294 | 3.794 | 0.000 | 0.990 | 1.010 |

QAC | 3.428 | 1.116 | 0.252 | 3.071 | 0.004 | 0.883 | 1.132 |

SS | −0.178 | 0.071 | −0.197 | −2.497 | 0.016 | 0.956 | 1.046 |

CCS | −0.504 | 0.130 | −0.305 | −3.866 | 0.000 | 0.956 | 1.046 |

Linear model (Dependent variable R_{i})
. | Unstandardized coefficients . | Standardized coefficient . | t
. | Sig. . | Collinearity statistics . | ||
---|---|---|---|---|---|---|---|

B . | Std. Err. . | Beta . | Tolerance . | VIF . | |||

Step 8 | |||||||

(Constant) | 114.859 | 23.607 | 4.865 | 0.000 | |||

PT | 0.673 | 0.080 | 0.680 | 8.445 | 0.000 | 0.915 | 1.093 |

DD | −77.908 | 16.053 | −0.381 | −4.853 | 0.000 | 0.964 | 1.038 |

WPH | 0.199 | 0.052 | 0.294 | 3.794 | 0.000 | 0.990 | 1.010 |

QAC | 3.428 | 1.116 | 0.252 | 3.071 | 0.004 | 0.883 | 1.132 |

SS | −0.178 | 0.071 | −0.197 | −2.497 | 0.016 | 0.956 | 1.046 |

CCS | −0.504 | 0.130 | −0.305 | −3.866 | 0.000 | 0.956 | 1.046 |

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