Independent variables (%w/v) | Symbols | Coded values | ||
−1 | 0 | +1 | ||
Glucose | A | 1.5 | 2 | 2.5 |
Tryptone | B | 1.1 | 1.6 | 2.1 |
Yeast extract | C | 1.1 | 1.6 | 2.1 |