Pelargonium graveolens Aqueous Decoction: A New Water-Soluble Polysaccharide and Antioxidant-Rich Extract

Table 3

Parameters of the polynomial models representing the studied responses (Y1-Y3).

Model	Y1		Y2		Y3
Model parameters	Coefficient	P value	Coefficient	P value	Coefficient	P value
b0	32.524		77.720		4.937
b1	3.911		8.227		1.702
b2	0.224	n.s	-0.503	n.s	0.195	n.s
b11	-0.161	n.s	-1.976	n.s	0.446	n.s
b22	0.032	n.s	0.277	n.s	0.738
b12	-0.442	n.s	2.508	n.s	-0.562	n.s
Model validation
Significance level (%)
Df	13		13		13
Sum of squares	1.28E+02		9.16E+02		42.341
Mean square	24.04		1.66E+02		7.673
R^2	0.949		0.910		0.902
Adjusted R^2	0.918		0.854		0.847

: Significant at the level 99.9% 
: Significant at the level 99% 
: Significant at the level 95%
n.s: not significant
Df: degrees of freedom.