Table 4: Verification of the models by comparing the experimental values with the predicted values.

ResponsePredicted valueExperimental value*

Spread ratio11.9210.93 ± 0.06
Hardness, N 25.07 31.47 ± 1.02
Stress-strain ratio0.4090.599 ± 0.017
Overall acceptability4.534.17 ± 0.41

 *Average of ten experiments.