@misc{Hryniewicz_Olgierd_(1948–_)_Selection_2003, author={Hryniewicz, Olgierd (1948– )}, copyright={Creative Commons Attribution BY 4.0 license}, address={Warszawa}, journal={Raport Badawczy = Research Report}, howpublished={online}, year={2003}, publisher={Instytut Badań Systemowych. Polska Akademia Nauk}, publisher={Systems Research Institute. Polish Academy of Sciences}, language={eng}, abstract={In this paper, the problem of the selection of variables for systems analysis is considered. Variables are selected according to the statistical analysis of experts opinions. The possible ambiguous opinions of experts were described by possibility distributions, and thus by fuzzy sets. For such fuzzy data, a fuzzy version of the Pearson’s chi-square test of independence was proposed.}, title={Selection of variables for systems analysis - application of a fuzzy statistical test for independence}, type={Text}, URL={http://www.rcin.org.pl/Content/104077/PDF/RB-2003-15.pdf}, keywords={Liczby rozmyte, Fuzzy data, Statistical test of independence, Possibility, Statystyczny test niezależności, Możliwości}, }