Table 3.
Regression statistics, analysis of variance (ANOVA) for Plackett-Berman experimental design results used for optimizing the endophytic S. coelicolor strain E72 biomass production.
| Variables | Coefficients | Standard Error | t Stat | P-value | Confidence level (%) |
|---|---|---|---|---|---|
| Sucrose | 1.34125 | 0.025251575 | 53.115499 | 1.47E-05* | 99.999 |
| (NH4)2SO4 | 1.06625 | 0.025251575 | 42.225089 | 2.92E-05* | 99.997 |
| NaNO3 | −0.49125 | 0.025251575 | −19.454232 | 0.000297* | 99.970 |
| KCl | 0.00875 | 0.025251575 | 0.346513 | 0.751837 | 24.816 |
| K2HPO4 | 1.79125 | 0.025251575 | 70.936169 | 6.17E-06* | 99.999 |
| MgSO4·7H2O | −0.36625 | 0.025251575 | −14.504046 | 0.000711* | 99.929 |
| FeSO47H2O | −0.43375 | 0.025251575 | −17.177146 | 0.00043* | 99.957 |
| df | SS | MS | F | Significance F | |
| Regression | 7 | 53.6647875 | 7.6663982 | 1502.88 | 2.61E-05 |
| Residual | 3 | 0.015303409 | 0.0051011 | ||
| Total | 10 | 53.68009091 |
Multiple R, 0.99, R Square, 0.99, Adjusted R Square, 0.99, Standard Error, 0.07, *Significant values, df: Degree of freedom, SS - sum of squares, MS- mean square, F: Fishers’s function, P: Level of significance.