Sodium Metasilicate Cemented Analogue Material and Its Mechanical Properties

Table 6

Orthogonal polynomial regression analysis of variance: Young’s modulus index.

The source of variance	Square and variation	Degree of freedom	Variance estimate	F-value		Level of significance	Remarks
	2.3480 × 10^4	1	2.3480 × 10^4	138.39	4.13		, 1-order term
	9.6348 × 10^2	1	9.6348 × 10^2	5.68			, 2-order term
	5.3201 × 10^3	1	5.3201 × 10^3	31.36			, 3-order term
	2.4806 × 10^3	1	2.4806 × 10^3	14.62			, 1-order term
	1.4674 × 10^1	1	1.4674 × 10^1	0.09			, 2-order term
	1.4405 × 10^2	1	1.4405 × 10^2	0.85			, 3-order term
	4.6801 × 10^4	1	4.6801 × 10^4	275.85			, 1-order term
	2.0670 × 10^1	1	2.0670 × 10^1	0.12			, 2-order term
	5.1386 × 10^2	1	5.1386 × 10^2	3.03			, 3-order term
	1.4421 × 10^4	1	1.4421 × 10^4	85.00			, 1-order term
	4.4916 × 10^1	1	4.4916 × 10^1	0.26			, 2-order term
	1.8862 × 10^2	1	1.8862 × 10^2	1.11			, 3-order term
Error	5.9382 × 10^3	35	1.6966 × 10^−2