Combinations of full factorial design and fractional factorial design.
| Category | no. | Factor A | Factor B | Factor C |
|---|---|---|---|---|
| Full factorial design | 1 | 1 | 1 | 1 |
| 2 | 1 | 1 | 2 | |
| 3 | 1 | 2 | 1 | |
| 4 | 1 | 2 | 2 | |
| 5 | 2 | 1 | 1 | |
| 6 | 2 | 1 | 2 | |
| 7 | 2 | 2 | 1 | |
| 8 | 2 | 2 | 2 | |
| Fractional factorial design | 1 | 1 | 1 | 1 |
| 2 | 1 | 2 | 2 | |
| 3 | 2 | 1 | 2 | |
| 4 | 2 | 2 | 1 |