Analysis of Window Components Affecting U-Value Using Thermal Transmittance Test Results and Multiple Linear Regression Analysis

Table 5

Results of regression analysis with regard to Model 3 (single window) and 4 (double window).

Model	R		R square	Adjusted R square	Standard error of the estimate	Durbin–Watson statistic
	WD_1 = (selected)	WD_1 ≃ (unselected)				WD_1 = (selected)	WD_1 ≃ (unselected)
3 single	0.827^a	0.297	0.683	0.661	0.2569519	1.502	0.235
4 double	0.716^a	0.250	0.513	0.459	0.2039560	2.079	1.222

^aPredictors: (constant), SP_2, GL_AG3, FR_1, GL_CL1, GL_CL3, GL_LE1, GL_AG2, FR_5, FR_WIDTH, GL_AIR1, OP_3, GL_LE3, FR_4, GL_AIR2, GL_LE2, GL_AG1, GL_CL2, and SP_1.