Table 2.

Regression coefficients and analysis of variance (ANOVA) of the models for the variables of response of oleuropein, hydroxytyrosol and total compounds.

	Responses
Regression Coefficients	Oleuropein	Hydroxytyrosol	Total Compounds
β0	−0.227440	0.414128 *	11.80061 *
Linear
β1	0.207086 *	0.005551 *	0.15374 *
β2	0.428329 *	0.009575 *	0.46774 *
β3	0.367820 **	0.004871 *	0.68413 **
Cross product
β12	−0.001293 *	−0.000154 **	−0.00114 *
β13	−0.001110	0.000153	−0.00190
β23	0.001030	0.000098 **	0.00225
Quadratic
β11	−0.000743 *	−0.000014	−0.00034
β22	−0.002661 *	−0.000069 *	−0.00347 *
β33	−0.015611	−0.000981 *	−0.04123 **
Adequacy of the model
R2	0.89055	0.99282	0.92365
p (model)	0.046761	0.011786	0.008413
p (lack of fit)	0.055317	0.076639	0.103196

* Significant at α < 0.05, ** Significant at α < 0.1.