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Two factor, two level factorial design with three center points in coded form and with actual values
| Standard Run Order | Chitosan Content in the Coat* | Coating Level* |
|---|---|---|
| 1 | −1 (8%) | −1 (20%) |
| 2 | −1 (8%) | +1 (60%) |
| 3 | +1 (14%) | −1 (20%) |
| 4 | +1 (14%) | +1 (60%) |
| 5 | 0 (11%) | 0 (40%) |
| 6 | 0 (11%) | 0 (40%) |
| 7 | 0 (11%) | 0 (40%) |
Values in parentheses are the actual levels for the factors
