extremely significantp < 0.001
As can be seen from Table 4 , the model is extremely significant ( p < 0.001), the coefficient of determination R 2 of the model is 0.9973, and the lack of fit is not significant (0.7224 > 0.05).
As can be seen from Table 4 , the model is extremely significant ( p < 0.001), the coefficient of determination R 2 of the model is 0.9973, and the lack of fit is not significant (0.7224 > 0.05).