Real-Time Warning and Risk Assessment of Tailings Dam Disaster Status Based on Dynamic Hierarchy-Grey Relation Analysis

Table 5

Spearman’s rank correlation coefficient of element .

Data groups (N=10)	Maximum daily precipitation	Mean	Sort rank of element ()	Average sort rank ()
N1	91	3.86	9	5	16
N2	86	4.00	5	6	1
N3	85	3.32	4	3	1
N4	88	4.27	7	10	9
N5	82	3.91	3	4	1
N6	89	4.45	10	8	4
N7	90	4.32	8	9	1
N8	87	3.64	6	7	1
N9	74	3.50	1	2	1
N10	81	3.27	2	1	1
Correlation coefficient	=0.76