Table 5. Results of ANOVA Analysis for Quadratic Model Regression of the Yield of AgNP Synthesis by Aqueous Extract of Olive Tree L.^a.

interaction type	source	TPC [μg GAE/mL]
		coefficient factor	SS	df	MS	F-value	p-value
	model	1.596	1.054	9	0.1171	18.015	0.003*
linear	x1	0.004	0.0001	1	0.0001	1.000	0.500
	x2	0.314	0.788	1	0.788	7000.111	0.008*
	x3	0.104	0.087	1	0.087	769.138	0.023*
quadratic	x21	–0.172	0.095	1	0.095	845.174	0.022*
	x22	–0.017	0.0009	1	0.0009	8.587	0.209
	x23	–0.105	0.035	1	0.035	312.854	0.036*
interaction	x1x2	0.107	0.046	1	0.046	405.176	0.032*
	x1x3	0.043	0.007	1	0.007	66.509	0.078
	x2x3	0.056	0.012	1	0.012	110.509	0.060
residual			0.026	4	0.0065
pure error			0.0001	1	0.0001
LoF			0.0261	3	0.0087	77.382	0.083
core total			1.080	13

^aNote: SD = 0.29; mean 1.427; R² = 0.9757; R_adj² = 0.9211; R_pred² = 0.9759; CV % = 20.3%; adequate precision = 14.2814; PRESS = 0.026; SS—sum of squares; MS—mean square; PRESS—predicted residual error sum of squares; df—degree of freedom; * significant for p < 0.05.