The purpose of this chapter is to present the Bayesian methods applied
in the research into the factors responsible for regional economic growth.
It presents the assumptions of the Bayesian pooling approach in regression models,
the elements of Bayesian inference, and the details of the MC3 algorithm
applied in successive stages of this study. The chapter also discusses the issue
of the collinearity of explanatory variables. These issues constitute the theoretical
core of empirical studies on convergence in the EU regions, conducted in the