An F-test was used to compare the experimental and cal- culated responses at the centre of the experimental domain, to evaluate the existence of relevant quadratic effects
An F-test was used to compare the experimental and cal-culated responses at the centre of the experimental domain, toevaluate the existence of relevant quadratic effects
An F-test was used to compare the experimental and cal - culated responses at the centre of the, experimental domain to evaluate. The existence of relevant quadratic effects.