highly significantp < 0.0001
Multiple regression fitting of the data from Table 3 yielded the following second-order polynomial regression equation: Y = 1.08 + 0.0446A + 0.0190B + 0.0427C − 0.0040AB − 0.0318AC − 0.0327BC − 0.1740A 2 − 0.2231B 2 − 0.2133C 2 As shown in Table 3 the model was highly significant ( p < 0.0001), and the lack of fit was not significant ( p = 0.3247 > 0.05).