Multivariate-Statistical Assessment of Heavy Metals for Agricultural Soils in Northern China

Table 3

Descriptive statistics of soil heavy metals pollution indices.

Variable	𝑃𝑖								𝑃
	Cu	Zn	Ni	Pb	Cr	Hg	As	Cd
Min.	0.111	0.154	0.215	0.035	0.131	0.018	0.087	0.15	0.091
Max.	0.332	0.293	0.608	0.117	0.354	0.374	0.396	0.483	0.521
Mean	0.212	0.233	0.417	0.054	0.231	0.076	0.246	0.246	0.305
Kurt.	1.403	0.430	−0.283	9.317	1.959	9.669	0.177	3.142	1.968
Skew.	0.352	0.073	−0.185	2.108	0.762	2.769	−0.116	1.476	0.086
St.d	0.034	0.024	0.077	0.011	0.035	0.060	0.060	0.067	0.121
C.V.	16.04	10.30	18.47	20.37	15.15	78.95	24.39	27.24	39.67

St.d: standard deviation, C.V.: coefficient variation.