Table 7.

Model validation.

Model	Compressive Strength	Modulus Elasticity	Poisson’s Ratio	Direct Tensile	Dry Shrinkage	Flexural Strength
R2	0.939	0.946	0.938	0.931	0.983	0.944
Adj. R2	0.881	0.909	0.881	0.874	0.967	0.898
Pred R2	0.696	0.284	0.591	0.086	0.863	0.201
AP	14.62	6.73	15.93	9.11	27.11	10.44
S.D.	4.72	2.49	0.013	0.218	18.01	0.461
μ	65.96	23.11	0.255	2.97	1287.9	10.22
C.V.%	7.16	10.76	5.01	7.36	1.40	4.52

R²: correlation degree, Adj. R²: adjusted correlation degree, Pred R²: predicted correlation degree, AP: adequate precision, S.D.: standard deviation, μ: mean, and C.V.: coefficient of variation.