Table 10: Two way analysis of variance for split tensile strength of concrete.

Source of Variation SS df MS F P-value F crit
Curing Days 26.43042 4 6.607606 143.283 5.61E-30 2.525215
CS Addition 2.759795 5 0.551959 11.96898 4.71E-08 2.36827
Interaction 2.208698 20 0.110435 2.394731 0.004864 1.747984
Within 2.766947 60 0.046116 - - -
Total 34.16586 89 - - - -