In the work considers methods and means of expert estimation of software systems and gives their comparative characteristic. The modified method of expert evaluation of software systems on the basis of analysis of interval data is described. The proposed method will allow you to get the interval of estimation software product by experts, which is guaranteed to satisfy the software developers. In the work deals with the task of constructing the criterion of compatibility of experts' assessments within the group.

Spivak Iryna, Ph.D., Associate Professor of Department of Computer Science, Ternopil, Ukraine, i.spivak@tneu.edu.ua.Krepych Svitlana, PhD., Senior Lecturer of the Department of Computer Science, Ternopil, Ukraine, s.krepych@tneu.edu.ua.Computer Science DepartmentTernopil National Economic UniversityUkraine.