Table 8.

Analysis of variance for UCS model.

ANOVA a
Model	Squares Sum	Degrees of Freedom	Average	F	sig.
regression	3.531	3	1.177	63.009	0.000 b
remainder	0.635	34	0.019
Total	4.166	37

^a dependent variable: $\sqrt[3]{\mathrm{UCS}}$(MPa); ^b predictors: constant, $\sqrt[5]{t }$(days), w/c, Rc + Ru (%).