An Empirical Study of Hybrid DEA and Grey System Theory on Analyzing Performance: A Case from Indian Mining Industry

Table 6

Correlation coefficient (2014).

	Staff cost	Energy purchase	Other expenses	Equity capital	Net income	Net profit	Basic EPS
Staff cost	1	0.380873213	0.98075502	0.627931207	0.221718204	1	0.380873213
Energy purchase	0.380873213	1	0.418084532	0.844263775	0.39597191	0.380873213	1
Other expenses	0.98075502	0.418084532	1	0.718349623	0.284462435	0.98075502	0.418084532
Equity capital	0.627931207	0.844263775	0.718349623	1	0.501068342	0.627931207	0.844263775
Net income	0.221718204	0.39597191	0.284462435	0.501068342	1	0.221718204	0.39597191
Net profit	1	0.380873213	0.98075502	0.627931207	0.221718204	1	0.380873213
Basic EPS	0.380873213	1	0.418084532	0.844263775	0.39597191	0.380873213	1