Table 8. Comparative t-test analysis of DBH and tree height for true and false classifications in Pinus koraiensis and Larix kaempferi

Categories			Observations	Mean	Variance	t-value	p-value(two-tail)
Pinus koraiensis	DBH	True	40	19.0	6.6	0.10	0.92
		False	15	18.9	11.8
	Tree Height	True	40	26.9	45.9	−1.59	0.13
		False	15	31.0	78.9
Larix kaempferi	DBH	True	6	25.5	10.2	0.65	0.53
		False	17	24.1	52.3
	Tree Height	True	6	30.6	37.7	0.33	0.75
		False	17	29.5	64.3