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Objetivou-se verificar o ajuste de 12 series historicas de pressao atmosferica mensal (milibar) no periodo de 1970 a2007, em Mossoro, RN, a sete modelos de distribuicao densidade de probabilidade Normal, Log-Normal, Beta, Gama, Log-Pearson (Tipo III), Gumbel e Weibull, atraves dos testes Kolmogorov-Smirnov, Qui-Quadrado, Cramer Von-Mises, Anderson Darling e Kuiper a 10 % de probabilidade e utilizando-se o Logaritmo da Maxima Verossimilhanca. Verificou-se a superioridade do ajustamento da distribuicao de probabilidade Normal, quando comparada com as outras seis distribuicoes. No geral, os criterios de ajuste concordaram com a aceitacao da hipotese H 0 , no entanto, deve-se salientar que o teste de Kolmogorov-Smirnov apresenta um nivel de aprovacao de uma distribuicao sob teste muito elevado, gerando inseguranca aos criterios do teste, porem, como neste estudo os dados sao aproximadamente simetricos, esse e o mais recomendado. Probability distributions for historic series of monthly atmospheric pressure in city of Mossoro-RN Abstract : The aim of this study was to determine the set of 12 time series of monthly atmospheric pressure (millibars) in the period 1970-2007, in Natal, RN, the seven models of the probability density distribution Normal, Log-Normal, Beta, Gamma, Log -Pearson (Type III), Gumbel and Weibull, through the Kolmogorov-Smirnov tests, Chi-Square, Cramer-von Mises, Anderson Darling and Kuiper 10 probability and using the logarithm of the maximum likelihood. It is the superiority of adjusting the normal probability distribution compared to the other six distributions. Overall, the fit criteria agreed with the acceptance of the hypothesis, however, it should be noted that the Kolmogorov-Smirnov test shows a level of approval of a distribution under test very high, which creates some uncertainty to the criteria of test, but in this study as the data are roughly symmetrical it is the most recommended.

Distribuições de probabilidade para séries históricas mensais de pressão atmosférica no município de Mossoró-RN