Table 2 Variance analysis of Plackett–Burman design
Source | Sum of squares | Degree of freedom | Mean square | F-value | p value |
|---|---|---|---|---|---|
Regression model | 35.31 | 7 | 5.04 | 7.69 | 0.0335 |
A | 0.75 | 1 | 0.75 | 1.14 | 0.3449 |
B | 6.64 | 1 | 6.64 | 10.13 | 0.0335 |
C | 20.03 | 1 | 20.03 | 30.55 | 0.0052 |
D | 4.99 | 1 | 4.99 | 7.61 | 0.0509 |
E | 0.49 | 1 | 0.49 | 0.75 | 0.4341 |
F | 2.29 | 1 | 2.29 | 3.49 | 0.1350 |
G | 0.11 | 1 | 0.11 | 0.17 | 0.7006 |