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Analysis of variance (ANOVA) of butanol production
| Source | DF* | SS# | MS | F ratio (F) | p value (p) | Confidence level (%) | Percent contribution |
|---|---|---|---|---|---|---|---|
| Yeast extract | 1 | 5.9004 | 5.9004 | 98.33 | <0.005 | 96.09 | 55.14 |
| PABA | 1 | 2.036 | 2.036 | 14.45 | <0.005 | 78.32 | 28.985 |
| Sodium acetate | 1 | 0.2076 | 0.2076 | 3.6 | >0.005 | 58.32 | 9.125 |
| MgSO4 | 1 | 0.3541 | 0.3541 | 1.89 | >0.005 | 68.96 | 6.749 |
| Residual error | 3 | 1.1118 | 0.2779 | ||||
| Model | 7 | 9.6099 | 2.12 | 100 |
* Degree of freedom, # Sum of squares
