highly significantP < 0.0001
(1) Y = 87.95 + 4.76A + 0.34B + 1.54C-9.09AB-3.26AC-0.71BC-9.32A 2 -11.19B 2 -23.58C 2 Analysis of variance showed that the model was highly significant ( P < 0.0001) and the effect of the tested factors on Y was not simply the result of a linear relationship.