Research Article
Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design
Table 3
The design matrix in coded values of the CCD.
| | Runs | | | | |
| | 1 | 1.00 | 1.00 | 4.12 | 3.42 | | 2 | 1.00 | −1.00 | 2.54 | 2.05 | | 3 | −1.00 | 1.00 | 3.92 | 3.02 | | 4 | −1.00 | −1.00 | 2.71 | 2.09 | | 5 | −1.41 | 0.00 | 3.36 | 2.48 | | 6 | 1.41 | 0.00 | 4.18 | 4.43 | | 7 | 0.00 | −1.41 | 2.34 | 1.77 | | 8 | 0.00 | 1.41 | 4.32 | 4.21 | | 9 | 0.00 | 0.00 | 3.91 | 4.41 | | 10 | 0.00 | 0.00 | 3.98 | 4.52 | | 11 | 0.00 | 0.00 | 3.89 | 4.39 | | 12 | 0.00 | 0.00 | 3.95 | 4.45 | | 13 | 0.00 | 0.00 | 3.93 | 4.43 |
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