Table 6. Analysis of variance (ANOVA) for the determination of physical properties of LRM

Source of variation	Sum of squares	df	MS	F-value	p-value	F crit
Bending strength, MOR (kPa)
Between groups1)	2,349.858	3	783.2861	2.813805	0.072599	3.238872
Within groups2)	4,453.961	16	278.3726
Total	6,803.819	19
Apparent modulus of elasticity, MOE (MPa)
Between groups	15,406.96	3	5,135.653	9.89596	0.000627	3.238872
Within groups	8,303.435	16	518.9647
Total	23,710.39	19
Tensile strength parallel to fiber grains, Rt (MPa)
Between groups	154.8132	3	51.6044	0.274066	0.843218	3.238872
Within groups	3,012.67	16	188.2919
Total	3,167.484	19
Compression strength parallel to fiber grains, Rc (MPa)
Between groups	194.9427	3	64.98089	0.346872	0.791884	3.238872
Within groups	2,997.346	16	187.3341
Total	3,192.288	19

Between different BA concentrations.
Between different samples of the same BA concentrations.
LRM: light red meranti, df: degree of freedom, MS: mean of squares, F crit: critical F-value, MOR: modulus of rupture, BA: boric acid.