Table 9. Paired t-test for visual preference according to viewpoint (n=50)

Variables		Paired t-test
		Mean	S.E	S.D	F	Sig
View point 1 (close-range view)	Having FPV visual preference	1.64	0.626	0.089	49	.000
	Being without FPV visual preference	6.06	1.106	0.156
View point 2 (middle-range view)	Having FPV visual preference	2.22	0.535	0.760	49	.000
	Being without FPV visual preference	6.04	0.992	0.140
View point 3 (distant-range view)	Having FPV visual preference	2.34	0.749	0.106	49	.000
	Being without FPV visual preference	6.10	1.049	0.168