Regional Agglomeration Characteristics and Spatiotemporal Evolution of Snow and Ice Sports Industry in Heilongjiang Province from the Perspective of Time and Space

Table 5

The results of variance analysis of the response surface model for optimizing the agglomeration and spatial layout of the ice and snow sports industry.

Source	Sum of squares	Df	Mean Square	F Value	value Prob > F	—
Model	4.59	14	0.33	15.27	<0.0001	Significant
A-IEE	2.15	1	2.15	100.18	<0.0001
B-PI/TI	0.044	1	0.044	2.04	0.0175
C-IPI	0.35	1	0.35	16.08	0.0013
D-ECI	5.76E-03	1	5.76E-03	0.27	0.6126
AB	0.12	1	0.12	5.67	0.032
AC	3.60E-03	1	3.60E-03	0.17	0.0385
AD	0.018	1	0.018	0.82	0.3759
BC	1.56E-03	1	1.56E-03	0.073	0.6451
BD	4.76E-03	1	4.76E-03	0.22	0.0415
CD	1.64E-03	1	1.64E-03	0.076	0.7863
A^2	0.5	1	0.5	23.28	0.0003
B^2	0.25	1	0.25	11.77	0.0041
C^2	0.52	1	0.52	24.32	0.0002
D^2	0.43	1	0.43	19.89	0.0005
Residual	0.3	14	0.021
Lack of fit	0.3	10	0.03	1557.92	<0.0001	Significant
Pure error	7.72E-05	4	1.93E-05
Cor total	4.89	28