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Handling the uncertainty in decision-making is always a challenge in practice. This holds also when choosing the most suitable strategy towards suppliers. In this situation, the time when the negotiation is done makes the decision even more difficult. This study builds on Trumić and Zapletal (2023) where the decision-making model has been built. However, this study focusses on the role of variability in opinions in more detail. The goal of this paper is twofold. First, the best strategy is explored with respect to time and uncertainty. Second, it is pointed out how much oversimplifying and distorting the aggregation of opinions using the averaging operator can be. The study works with the results of a large survey conducted in an automotive company. Stochastic multi-criteria acceptability analysis (SMAA) is used to get the results.
Keywords: Suppliers, negotiation, uncertainty, SMAA, AHP© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.