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

Table 3

Descriptive statistics analysis of the tested samples.

	Gravel %	Fines %	Sand %	Liquid limit	Plastic limit	Plasticity index	Maximum dry density	Optimum moisture content	CBR %
Mean	56.421	15.327	28.3	7.8	6.181	1.623	2.15	7.73	89.45
Std. error of mean	3.028	1.054	2.35	1.841	1.48	0.377	0.0124	0.288	7.37
Std. deviation	19.856	6.91	15.43	12.07	9.7	2.473	0.08134	1.89	48.32
Variance	394.27	47.81	238.17	145.8	94.06	6.12	0.07	3.591	2334.77
Median	63.4	14	19.1	0	0	0	2.157	7	60
Minimum	10.70	5.3	12.63	0.00	0.00	0.00	1.91	5.60	21
Maximum	80.37	28.3	75.8	35.20	28.70	6.80	2.24	16.50	172