Table 2 Statistical analysis of factors
From: Pretreatment of rice straw with combined process using dilute sulfuric acid and aqueous ammonia
Source | DF | Mean square | F value | Pr > F |
|---|---|---|---|---|
X 1 | 1 | 460.91 | 22.07 | 0.0008 |
X 2 | 1 | 2855.64 | 136.74 | <.0001 |
X 3 | 1 | 169.05 | 8.06 | 0.0176 |
X 11 | 1 | 124.56 | 10.82 | 0.0082 |
X 22 | 1 | 1130.13 | 56.67 | <.0001 |
X 33 | 1 | 90.10 | 4.32 | 0.0644 |
X 12 | 1 | 11.23 | 0.55 | 0.4761 |
X 13 | 1 | 22.11 | 1.04 | 0.3309 |
X 23 | 1 | 2241.12 | 11.50 | 0.0069 |