Estimating Performance Efficiency of Mining and Extracting Sectors Using DEA Models: The Case of Jordan

Table 9

Tobit model.

		Estimate	Std. error	Z-value	Pr (>|z|)	Criteria	Statistic
BCC-I	(Intercept): 1	0.78331	0.02253	34.763	<2e − 16	R-squared	0.149387
	(Intercept): 2	−2.02410	0.07129	−28.392	<2e − 16	Log-likelihood	40.171
	GDP growth	1.08513	0.45445	2.388	0.0169	Number of iterations	7
	ROA	0.60033	0.14238	4.216	2.48e − 05	Degree of freedom	248
BCC-O	(Intercept): 1	1.32919	0.03069	43.310	<2e − 16	R-squared	0.1822066
	(Intercept): 2	−1.69405	0.06299	−26.892	<2e − 16	Log-likelihood	34.6641
	GDP growth	−1.51748	0.61798	−2.456	0.0141	Number of iterations	5
	ROA	−0.78873	0.18354	−4.297	1.73e − 05	Degree of freedom	248

Signif. codes: 0.01 “” 0.05 “” 0.1 “”.