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The increase in crime in recent years in the city of Recife has left the population and the police alert. Society has modified its habits for fear of violence, while police try to prevent and fight new crimes according to the incidents reported to city police stations. This study aims to find and analyze possible relationships between representative variables of crime occurrences in the city of Recife, to assist in the analysis and creation of strategies for better crime prevention. Initially, a pre-processing of the bases was carried out using the Pentaho Kettle and R tools, followed by descriptive statistics and finally the Chi-square and Fisher hypothesis tests were applied. Key-words:Occurrences of crimes in Recife Chi-square; Fisher; R; Kettle; Análise de relação entre variáveis de ocorrências de crimes da cidade do Recife