An?lise da conduta das revendedoras de gasolina comum nas capitais da regi?o Nordeste.

O objetivo do artigo ? a verifica??o de ind?cios econ?micos de carteis na revenda de gasolina comum nas capitais da regi?o Nordeste, de janeiro de 2010 a dezembro de 2015. Os resultados dos ?ndices concorrenciais de pre?os indicaram que n?o houve concorr?ncia entre as revendedoras. A maioria das margens de comercializa??o apresentaram suave tend?ncia ascendente. As correla??es entre as margens e o coeficiente de varia??o mostraram que, em Salvador, Fortaleza, S?o Lu?s e Jo?o Pessoa, as eleva??es nas margens podem estar associadas a menor vari?ncia dos pre?os, sugerindo que os postos estariam adotando conduta uniforme nessas capitais.The aim of the paper was to determine whether there are economic evidence of cartels in the retail common gasoline in the capitals of the Northeast region, from January 2010 to December 2015. The results of the competitive price indices indicated that there was no competition between dealers. Most sales margins showed mild upward trend. Correlations between the banks and the coefficient of variation showed that in Salvador, Fortaleza, S?o Lu?s and Jo?o Pessoa, the increases in margins may be associated with less variance in prices, suggesting that the posts could be adopting uniform conduct in these capitals