Prediction of California Bearing Ratio of Granular Soil by Multivariate Regression and Gene Expression Programming

Table 5

Correlations matrix.

	CBR	Gr	F200	S	LL	PL	PI	MDD	OMC
CBR	1	0.773	−0.82	−0.623	−0.42	−0.42	−0.403	0.716	−0.437
Gr	0.773	1	−0.738	−0.953	−0.121	−0.118	−0.127	0.727	−0.46
F200	−0.82	−0.738	1	0.499	0.524	0.516	0.536	−0.741	0.565
S	−0.623	−0.953	0.499	1	−0.081	−0.081	−0.078	−0.6	0.337
LL	−0.42	−0.121	0.524	−0.081	1	0.998	0.968	−0.282	0.26
PL	−0.42	−0.118	0.516	−0.081	0.998	1	0.951	−0.275	0.252
PI	−0.403	−0.127	0.536	−0.078	0.968	0.951	1	−0.296	0.28
MDD	0.716	0.727	−0.741	−0.6	−0.282	−0.275	−0.296	1	−0.844
OMC	−0.437	−0.46	0.565	0.337	0.26	0.252	0.28	−0.844	1