highly significantp < 0.0001
The ANOVA results for the 2FI model of flexural strength in cement grout show (Table 6 ) that the model is highly significant (F = 36.12, p < 0.0001), with a strong fit (R2 = 0.8035, Adjusted R2 = 0.7813, Predicted R2 = 0.7571).