Table 7.

Analysis of variance (ANOVA) for the quadratic polynomial model fitted to LGO conversion, Y₁.

Source of variation	Degrees of freedom	Sum of squares	Mean square deviation	Standard	Significance
Regression	6	1.498	0.249	0.500	0.000a
Residuals	31	0.312	0.010	0.100
Lack of fit (model error)	11	0.133	0.012	0.110	0.270b
Pure error (replicate error)	20	0.179	0.008	0.095
R2 / $R_{adj.}^2$c	0.828/0.794
Q2	0.733

^aSignificant at the level 95%.

^bNo lack of fit.

^cR² adjusted for degree of freedom.