Measuring Competition in Romania - Basic Principles and Extensions

The paper present a brief analyze of tools used in estimating competition in Romania from the perspectives of economic theories. From classical index such Concentration ratio or Herfindahl-Hirschman index to extensions as Average relative size of firm to some new proposals from Romanian economic literature. For all commented indicators are presented some data analysis and in particular on the correlation between number of firms and concentration. The main conclusions are in the direction of an aggregate index as sole realistic possibility to characterize the multidimensional aspects of competition (market structure, economic process, and strategic behavior) correlated with the critical observations presented.