Table 6.

Statistical analysis of effects of medium constituents on antibiotic activity as per PBD.

Variables	Medium components	Effect	Standard error	t-value	P value	Confidence level (%)
X 1	Starch	21.667	2.331	4.65	0.010	99.0
X 2	Yeast extract	−3.333	2.331	−0.72	0.514	48.6
X 3	Peptone	5.000	2.331	1.07	0.344	65.6
X 4	MgSO4	8.333	2.331	1.79	0.148	85.2
X 5	KBr	11.667	2.331	2.50	0.067	93.3
X 6	FeSO4·7H2O	1.100	2.331	0.24	0.825	17.5
X 7	CaCO3	16.133	2.331	3.46	0.026	97.4