Table 1 Summary of regression equations by industry

Industry	R (test sample)	R (hold-out sample)	R-square	Adj. R-Square	Degree of Freedom	F-value	p-value	DW (test sample)	DW (hold-out sample)
large-scale stores	0.233	0.199	0.054	0.051	(36, 11445)	18.300	0.000	1.009	1.169
Convenience store	0.400	0.396	0.160	0.159	(37, 373884)	1929.286	0.000	1.556	1.548
Restaurants	0.339	0.340	0.115	0.115	(37, 697500)	2450.943	0.000	1.687	1.624
Discount stores	0.313	0.320	0.102	0.102	(37, 236257)	723.270	0.000	1.412	1.415
Fashion Stores	0.260	0.261	0.067	0.067	(37, 71123)	138.894	0.000	1.469	1.510