SEM application to the household travel survey on weekends versus weekdays: the case of Seoul, South Korea

European Transport Research Review

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Table 2 Descriptive statistics (n = 1960)

Factors	Variable descriptions (variable names)		Mean	S.D.	Min	Max
Travel behavior	Automobile weekday trip frequency (df_autom)		0.676	1.189	0	9
	Nonmotorized weekday trip frequency (df_non)		0.669	1.110	0	7
	Transit weekday trip frequency (df_transit)		0.938	1.680	0	20
	Automobile weekday travel minutes (dt_autom)		27.199	58.464	0	545
	Nonmotorized weekday travel minutes (dt_non)		13.035	27.485	0	440
	Transit weekday travel minutes (dt_transit)		30.819	58.149	0	680
	Automobile weekend trip frequency (ef_autom)		1.351	1.826	0	10
	Nonmotorized weekend trip frequency (ef_non)		1.059	1.627	0	12
	Transit weekend trip frequency (ef_transit)		1.911	2.176	0	14
	Automobile weekend travel minutes (et_autom)		78.509	139.332	0	1230
	Nonmotorized weekend travel minutes (et_non)		34.432	74.057	0	815
	Transit weekend travel minutes (et_transit)		88.511	121.700	0	855
Land Use	Bus stop density (avl_bus_d) [stops/mi²]		129.899	57.800	6.147	272.728
	Metro station density (avl_met_d) [stations/mi²]		1.369	0.879	0	4.892
	Street intersection density (cnn_d) [intersections/mi²]		891.677	516.995	22.767	2361.104
	Land use entropy (ent) [Shannon entropy: 0–1]		0.584	0.157	0.184	0.981
	Daytime population density (pop1_d) [persons/mi²]		67,992.582	52,014.381	97.261	411,117.750
	De jure population density (pop2_d) [persons/mi²]		68,945.406	33,138.902	16.955	197,880.479
Socio-demo-graphics	Household automobiles (h_autom1)		0.834	0.568	0	4
	Household children (h_child)		0.099	0.347	0	2
	Household size (h_size)		3.799	0.993	1	7
	Birth year (m_birth)		1969.033	16.170	1926	2000
		Categories	f	%
	Gender (m_gender)	Male (= 0)	883	45.1
		Female (= 1)	1077	54.9