Integrated DEA Models and Grey System Theory to Evaluate Past-to-Future Performance: A Case of Indian Electricity Industry

Table 13

Paired samples test.

	Paired differences						df	Sig. (2-tailed)
	Mean	Std. deviation	Std. error mean	95% confidence interval of the difference
				Lower	Upper
Nonradial-radial	0.39171	1.03373	0.27628	−0.20515	0.98857	1.418	13	0.180