“…The C.V. (%) for moisture content (% wb), ash content (%), fat content (%), fiber content (%), protein content (%), carbohydrate content (%), energy (kcal), and water activity of the nutri-cereal mix was 1.94%, 8.69%, 23.52%, 6.86%, 3.81%, 1.69%, and 0.5694%, respectively, which shows minimum variation in data suited to the model due to higher mean values of 5.431, 2.70, 1.0341, 9.523, 26.669, 54.63, and 334.53, respectively. The reliability of experimental data relies on C.V. values; lower the C.V, higher the reliability and vice versa. , The C.V. (%) values in this study were observed to be 1.94%, 8.69%, 23.52%, 3.81%, 6.86%, 1.69%, 0.5694%, and 2.64% for moisture, ash, fat, fiber, protein, carbohydrate, energy, and water activity, respectively. The p values for all the quality characteristic parameters of the special quartic model were lower than 0.05, and higher p value of lack of fit shows the nonsignificance of lack of fit …”