Table 1 Descriptive statistics of input... | Emerald Publishing

Table 1

Descriptive statistics of input and output variables, 2004–2017

	Input variables				Output variables
	Input variables				Desirable outputs			Undesirable output
	Labor (10*4 persons)	Net fixed asset value (100 million yuan)	Total number of vehicles	Total energy consumption (10*4ton TOE)	Passenger turnover volume (billion person-km)	Freight turnover volume (billion ton-km)	Value added of transport, storage and post	Total carbon dioxide emissions (10*4tons)
Average	21.20	953.49	34.11	835.29	76.89	486.7931467	822.56	1786.64
S.D	11.47	800.85	24.38	455.82	45.39	482.3844819	580.48	976.59
Max	59.12	4492.62	144.02	2398.72	187.24	2499.871	3097.67	5182.35
Min	6.77	92.86	5.64	124.72	9.17	36.77	96.7	273.67

	Input variables				Output variables
	Input variables				Desirable outputs			Undesirable output
	Labor (10*4 persons)	Net fixed asset value (100 million yuan)	Total number of vehicles	Total energy consumption (10*4ton TOE)	Passenger turnover volume (billion person-km)	Freight turnover volume (billion ton-km)	Value added of transport, storage and post	Total carbon dioxide emissions (10*4tons)
Average	21.20	953.49	34.11	835.29	76.89	486.7931467	822.56	1786.64
S.D	11.47	800.85	24.38	455.82	45.39	482.3844819	580.48	976.59
Max	59.12	4492.62	144.02	2398.72	187.24	2499.871	3097.67	5182.35
Min	6.77	92.86	5.64	124.72	9.17	36.77	96.7	273.67

Source(s): Authors' own work