Introduction -- Multiplicative pairwise comparisons -- Inconsistency indices and their properties -- Inconsistency reduction -- Alternative approaches to the evaluation of inconsistency in pairwise comparisons -- Inconsistency of incomplete pairwise comparisons matrices -- Ordinal inconsistency.

The aim of this paper was to investigate the relationship between countries’ PISA study results from 2018 and a set of indices related to socio-economic inequality, such as the Gini index, human development index, or gender inequality index, along with purely economic variables, such as GDP...