Abstract
The construction and study of models of economic situations in the form of decision trees is a professionally significant educational topic, which is reflected in the disciplines «Decision Theory», «Game Theory», «Mathematical Foundations of Financial Decisions», etc. Informatization of the educational process based on the new PrecisionTree tool allows not only a complete quantitative analysis of the economic situation under consideration, but also a primary visual analysis of decisions based on the data presented in the MS Excel spreadsheet without involving quantitative characteristics to clarify many possible outcomes and their possible consequences. The article shows how the use of the PrecisionTree tool as part of the teaching of the academic discipline «Theory of Decision Making» at the Institute of Mathematics, Information Systems and Digital Economics in Plekhanov REU allows you to introduce students of an economic undergraduate to new problems of decision theory arising from the professional activities ofreal economic agents (entrepreneurs, manufacturing firms, investors, etc.), mechanisms for choosing the optimal solution and instrumental implementation of the justification of this choice. The identified five methodological features make it possible to fully unleash the research and instrumental potential of the PrecisionTree tool in the practice of training the future economist. In addition, thirteen tools, the possibilities of which are disclosed in this article, allow us to organize the educational and cognitive activities of a student of an economic bachelor's degree in a new way
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