Özet:

The concept of concentration refers to the distribution of customers and sellers in terms of number and size in the goods market. There is a reverse relationship between concentration, and the number of firms and the level of competition; the lower the number of firms, the more concentration ratio and the lower the level of competition. There are various methods to measure concentration level in a certain market. In the study, concentration ratio in Turkish biscuit, chocolate and sugar products sector is analysed by using time series data for the period 1997-2014 through N-Firm Concentration Rates (CR-4 and CR-8), Herfindahl-Hirschman, Entropy, Rosenbluth Indices. As a result of the analysis, high level of concentration is determined according to CR-4 and CR-8 concentration ratios in the sector, while according to the Herfindahl-Hirschman, Entropy and Rosenbluth Indices the results reveal that the sector has a structure between monopolistic competition and oligopoly.

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