Table 5.

Analysis of variance for central composite design.

Source		Sum of Squares		df	Mean Square	F-value	p-value
Model		5.275E+06		9	5.861E+05	822.15	<0.0001	significant
A-Tween 80		1.643E+05		1	1.643E+05	230.48	<0.0001
B-Moisture ratio		17346.66		1	17346.66	24.33	0.0006
C-Magnesium sulphate		34173.83		1	34173.83	47.94	<0.0001
AB		1.312E+06		1	1.312E+06	1840.69	<0.0001
AC		904.61		1	904.61	1.27	0.2863
BC		42767.89		1	42767.89	60.00	<0.0001
A2		80111.34		1	80111.34	112.38	<0.0001
B2		1.970E+06		1	1.970E+06	2763.69	<0.0001
C2		2.100E+06		1	2.100E+06	2945.42	<0.0001
Residual		7128.55		10	712.86
Lack of Fit		5698.42		5	1139.68	3.98	0.0777	not significant
Pure Error		1430.13		5	286.03
Cor Total		5.282E+06		19
Std. Dev.		26.70			R2	0.9987
Mean	1075.49	Adjusted R2	0.9974
C.V. %	2.48	Predicted R2	0.9913
		Adeq Precision	70.9115