Table 2.
Statistics results of bending properties with two different span lengths

	Modulus of Rupture		Modulus of Elasticity
Span length (mm)	1,650	3,000	1,650	3,000
Aver. (MPa)	55.01	47.54	13,663	13,774
C. V.1)	0.34	0.34	0.18	0.15
Degree of freedom	123	123	123	123
Significant level	0.05		0.05
P value for Ftest	0.070		0.069
P value for ttest	0.001		0.813

C. V. is coefficient of variation