Soil Parameters Model Prediction via Resistivity Value Limit to Shallow Subsurface Areas

Table 2

Summary statistical analysis for soil parameters with resistivity.

Parameters	Moisture content,	Clay content	Plasticity index, PI	Friction angle, ϕ	Bulk density,	Porosity, n
Number of points	66	66	66	48	65	66
Degrees of freedom	64	64	64	46	63	64
Reduced chi-square	195.02	183.76	192.27	52.14	0.09	118.83
Residual sum of squares	12481.16	11760.85	12305.48	2398.34	5.79	7605.22
R-value	0.9382	0.6398	0.0692	0.4787	0.5503	0.7561
R-square (COD)	0.8802	0.4093	0.0048	0.2292	0.3028	0.5717
Adj. R-square	0.8784	0.4001	−0.0108	0.2124	0.2917	0.5650
Root-MSE (SD)	13.96	13.56	13.87	7.22	0.30	10.90
Number of iterations	5	4	7	6	5	4
Fit status	Succeeded (100)	Succeeded (100)	Succeeded (100)	Succeeded (100)	Succeeded (100)	Succeeded (100)