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The problem of the selection of variables for systems analysis is considered. Variables are selected according to the statistical analysis of experts opinions. We propose to describe possible ambiguous experts opinions by possibility distributions, and thus by fuzzy sets. For such fuzzy data we propose a fuzzy version of the Pearson’s chi-square test of independence.
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Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.
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