Lisbon’s Establishment-based Freight Survey: revealing retail establishments’ characteristics, goods ordering and delivery processes

Alho, André Romano; de Abreu e Silva, João

doi:10.1007/s12544-015-0163-7

European Transport Research Review

An Open Access Journal

Table 5 Deliveries, employees, sales area, suppliers and items

From: Lisbon’s Establishment-based Freight Survey: revealing retail establishments’ characteristics, goods ordering and delivery processes

	Cat.	1	2	3	4	5	6	7	8	9	10	Avg.	All
Sample	Obs.	27	23	103	55	76	48	11	23	24	168	–	558
Sample	Dif. Original	−4	−2	−1	−4	−1	−4	0	−3	−1	−25	–	−45
Deliveries	Avg.	9.78	9.83	2.53	3.89	7.84	4.60	4.64	13.17	6.67	11.39	–	7.54
	S.D.	5.28	6.95	2.68	4.31	6.06	4.62	4.54	8.09	5.16	6.69	–	6.61
	C.V. % (var)	54	71	106	111	77	100	98	61	77	59	81	88
Employees	Avg.	2.81	2.43	2.21	3.09	2.37	2.81	2.09	4.48	3.58	4.01	–	3.10
	S.D.	1.44	1.04	1.20	1.75	1.13	1.65	1.04	2.48	2.17	2.22	–	1.91
	C. V. % (var)	51	43	54	56	48	59	50	55	60	55	53	62
	r²	0.01	0.27	0.11	0.62	0.00	0.13	0.08	0.31	0.37	0.25	0.22	0.22
	Coef.	0.35	3.46*	0.76**	0.06	−0.26	0.99*	−1.25	1.81**	1.45**	1.50**	–	1.61**
	RMSE	5.36	6.10	2.54	4.21	6.09	4.36	4.59	6.88	4.18	5.81	5.01	5.86
	C.V. % (model)	55	62	100	108	78	95	99	52	63	51	76	78
	SSE	718	781	650	939	2744	876	190	995	384	5611	–	19,079
Sales Area¹ (m²)	Avg.	48.70	61.52	62.77	96.64	63.62	125.52	45.00	91.74	121.67	63.69	–	74.54
	S.D.	35.88	45.71	69.31	78.10	90.14	91.02	25.59	92.33	173.57	47.23	–	78.63
	C. V. % (var)	74	74	110	81	142	73	57	101	143	74	93	105
	r²	0.09	0.16	0.18	0.04	0.05	0.01	0.01	0.01	0.24	0.03	0.08	0.00
	Coef.	−0.05	0.06	0.02**	0.01	−0.02*	0.00	−0.02	0.01	0.01*	0.03*	–	0.00
	RMSE	5.12	6.52	2.44	4.26	5.94	4.64	4.77	8.26	4.59	6.59	5.31	6.61
	C.V. % (model)	52	66	96	109	76	101	103	63	69	58	79	88
	SSE	656	891	603	962	2608	992	205	1434	464	7216	–	24,272
Suppliers	Avg.	8.89	10.22	10.27	11.33	9.96	16.35	8.64	14.91	7.42	10.27	–	10.82
	S.D.	9.54	8.19	9.96	11.15	9.49	14.37	4.32	9.78	5.98	6.42	–	9.44
	C. V. (var)	107	80	97	98	95	88	50	66	81	63	82	87
	r²	0.00	0.36	0.06	0.39	0.00	0.30	0.00	0.00	0.50	0.34	0.20	0.07
	Coef.	0.02	0.51**	0.06*	0.24**	0.01	0.18**	0.04	−0.03	0.61**	0.61**	–	0.18**
	RMSE	5.38	5.69	2.62	3.39	6.10	3.91	4.79	8.28	3.74	5.43	4.93	6.38
	C.V. (model)	55	58	103	87	78	85	103	63	56	48	74	85
	SSE	723	679	691	609	2749	703	206	1440	308	4899	–	22,663
Items	Avg.	54.11	71.87	11.09	16.31	30.21	20.02	13.64	61.87	33.67	47.43	–	33.62
	S.D.	68.11	91.93	18.98	24.62	36.16	25.98	12.55	58.69	38.45	57.79	–	49.29
	C. V. (var)	126	128	171	151	120	130	92	95	114	122	125	147
	r²	0.23	0.78	0.02	0.16	0.09	0.23	0.00	0.56	0.17	0.32	0.26	0.35
	Coef.	0.04*	0.07**	0.02	0.07**	0.05**	0.09**	0.02	0.10**	0.06*	0.07**	–	0.08**
	RMSE	4.71	3.32	2.67	3.99	5.83	4.09	4.78	5.52	4.79	5.51	4.52	5.33
	C.V. (model)	48	34	105	103	74	89	103	42	72	48	72	71
	SSE	556	232	721	843	2515	768	206	639	505	5040	–	15,808

r², Coef., RMSE, and C.V. (model) and SSE (Sum of Squared Errors) regard regressions with “Deliveries” as the dependent variable
*significant at 0.05 level
**significant at 0.01 level
¹Midpoint of area interval in m²: 10, 35, 75, 150

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