Optimized Synthesis of Magnesium Oxide Nanoparticles as Bactericidal Agents

Table 4

The ANOVA test for studied factors on reducing the growth of bacteria.

Type of bacteria	Factors	DOF	Sum of squares	Variance	F-ratio (F)	Pure sum	Percent (%)
Gram-positive bacteria (Staphylococcus aureus)	Mg (NO3)2	2	5.24	2.62	29.69	5.07	63.36
	NaOH	2	2.32	1.16	13.13	2.14	26.78
	Stirring time	2	0.26	0.13	1.46	008	1.03
Gram-negative bacteria (Escherichia coli)	Mg (NO3)2	2	4.48	2.24	9.53	4.01	49.91
	NaOH	2	2.22	1.11	4.71	1.75	21.73
	Stirring time	2	0.87	0.43	1.85	0.40	4.96

DOF, degree of freedom.