Sequential Statistical Optimization of Media Components for the Production of Glucoamylase by Thermophilic Fungus Humicola grisea MTCC 352

Table 6

Statistical analysis of PBD on glucoamylase activity.

Variables	Main effect	Coefficients	Standard error	𝑡 value	𝑃 value	Confidence level (%)
Intercept		4.8542	0.065	74.68	<0.0001
𝐴	1.3050	0.6525	0.065	10.04	0.002	99.80*
𝐵	0.8850	0.4425	0.065	6.81	0.006	99.40*
𝐶	−0.1917	−0.0958	0.065	−1.47	0.237	76.30
𝐷	0.7550	0.3775	0.065	5.81	0.010	99.00*
𝐸	0.1217	0.0608	0.065	0.94	0.418	58.20
𝐹	−0.0250	−0.0125	0.065	−0.19	0.860	14.00
𝐺	0.5583	0.2792	0.065	4.29	0.023	97.70*
𝐻	0.3150	0.1575	0.065	2.42	0.094	90.60

∗Statistically significant at 95% confidence level.