Research Article
Optimization of River Sand with Spent Garnet Sand in Concrete Using RSM and R Programming Packages
Table 4
ANOVA response 1: compressive strength at 28 days (RStudio).
| | Estimate | Std. error | value | | Remarks |
| (Intercept) | 2.027e+01 | 4.848e-01 | 41.822 | 1.46e-12 | Significant | A | 7.098e-02 | 3.699e-03 | 19.187 | 3.22e-09 | Significant | B | NA | NA | NA | NA | Insignificant | AB | 1.701e-03 | 2.126e-04 | 7.999 | 1.18e-05 | Significant |
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