Long-Term Random Variability of Maximum Rainfall in Southeastern Brazil
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This research used a 124-year historical record of monthly rainfall col- lected on the Santa Eliza farm at the Instituto Agronômico de Campinas in southeastern Brazil. The methodology employed was to conduct a chi- square test in 30- and 10-year increments and compare the four and twelve periods that comprised the total of the analyzed series from 1890 to 2014. As a result of the chi-square test, there is no statistical evidence that its variability exhibited trends, allowing one to conclude that the frequency variability of maximum rainfall exhibits random variability, falling within the range of natural variability.