Model summary | ANOVA results | Coefficients | ||||||||
---|---|---|---|---|---|---|---|---|---|---|

R | R^{2} | Adjusted R^{2} | Std error of the estimate | F = 452 Sig. = 0 | Model | Unstandardized coefficients | Standardized coefficients | T-test | Sig. | |

B | Std error | beta | ||||||||

0.87 | 0.76 | 0.755 | 6.6 | N_{j} | −1.42 | 0.34 | −0.37 | −4.22 | 0.0 | |

Independent variable = N_{j}, dependent variable = RQD | (N_{j})^{2} | −0.15 | 0.02 | −0.512 | −5.83 | 0.0 | ||||

Constant | 99.3 | 0.46 | 214.5 | 0.0 |