BRAZILIAN COMPANIES QUARTERLY PROFIT TIME SERIES PROPERTIES
DOI:
https://doi.org/10.11606/rco.v2i2.34703Keywords:
time series, operating profit, net income, quarterly incomeAbstract
This article analyzes the Brazilian companies quarterly profit time series properties, verifying whether there is or not the presence of statistics independence in these series. Being a variable summary of the company performance, the profit is strongly analyzed (by market analysts, investors, government tax department etc), which shows the relevance of research when compared to the random behavior of its time series. The data were obtained from the data base of Economatica for a period between the first quarterly of 1995 and the last one of 2006. The variables used in this study were: the operational profit and the net profit, both subjected to the tests: (i) average changes; (ii) run tests; (iii) successive differences and (iv) serial correlation. The results found show certain time dependency according previous international evidence. It was also verified that there was a negative relation between the quarterly profit successive variations which means the companies that had their profit increased above average during a certain time, tended to vary less than the others in subsequent periods.Downloads
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