In this paper, an alternative approach was proposed for the determination of the modcls taken into account in themodeling of the ınixture surface which is obtained on the experiınental regjon. Thjs approach depends on theexamination of all possible subset regression models obtained for the mixturc model. In addition, model controlgraphs are taken into account to determine the best models. In this situation, with the help of different subsetregression n1odels, a n1ore comprehensive interpretation of the ınixture system and the components can be obtained.Then, proposed approach has been investigated on flare data set which is widely known in literature.