Table 3. Stepwise regression analysis result influencing the stand volume in mixed forest.

Input variable	Parameter estimate	Prob>F	Model R2	DW	Autocorrelation
Constant	-162.6859	0.0001	-	1.661	0.169
BA	6.3434	0.0001	0.8683
SI	9.9214	0.0001	0.9511
Age	0.7271	0.0001	0.9559