Research on the Policy Effect of Property Tax Reform: Take the Pilot Reforms in Chongqing and Shanghai as Examples

Table 3

Results of stepwise regression analysis.

Variables	Df	Sum of sq	RSS	AIC
<none>	1		1284732	178.37
− D	1	230908	1444820	180.13
+ inv	1	18920	1265812	180.15
+ gdp	1	17289	1267443	180.17
− lac	1	5792665	7077398	201.97
+ sbc	1	70821	1213912	179.52
− ssa	1	513348	1727260	182.81