The presented paper deals with a non-parametric approach to some indicators of national
competitiveness among the Member States of the Organisation for Economic Co-operation and Development.
A set of indicators such as GDP per capita, Global Competitiveness Index, International Institute for
Management Development ranking, and Ease of Doing Business by World Bank Group are often used to
evaluate competitiveness at the national level. The aim of the paper is to estimate possible associations
between these variables. The Kendall´s coefficient of concordance was applied. The first part of the paper
contains definition of the national competitiveness and approaches to its measurement. The second part
presents empirical results including of the non-parametrical approach methodology. Empirical results showed
that there were large differences among the selected countries. Value of the Kendall´s coefficient of
concordance implies associations between these variables (except DB) and concordance seems to be
significant.