Table 7.

Analysis of variance for selected factorial model of ethanol concentration

Sources	Sum of square	F value	P value	Standardized effect
Model	569.08	20.97	0.0049
A-KCl	127.97	51.88	0.0020	− 5.66
B-MgSO4	7.49	3.04	0.1563	1.37
C-ZnSO4	0.1743	0.0707	0.8035	− 0.21
D-CaCl2	3.00	1.22	0.3319	− 0.87
E-CuSO4	217.19	88.04	0.0007	− 7.37
F-FeSO2	39.91	16.18	0.0158	− 3.16
G-CoCl2	0.8236	0.3338	0.5944	− 0.45
H-MnCl2	15.00	6.08	0.0693	− 1.94
AB	56.96	23.09	0.0086	− 3.77
AE	34.25	13.88	0.0204	− 2.93
AH	66.30	26.88	0.0066	4.07
R2	0.9830
CV	2.10