ANÁLISE DOS DADOS DO SISTEMA NACIONAL DE INFORMAÇÕES DE SEGURANÇA DE BARRAGENS SOB A ÓTICA DA LEI DE BENFORD

Abstract

Surprisingly, the probability of the value of digits in random data from a wide range of areas follows a standard law called Benford's law. This law is widely used in audits of numerical data to assess the consistency of these data. In this study, the dam data presented in the National Dam Safety System (NDSS) will be assessed from the perspective of this law. These data are part of the National Dam Safety Plan, which regulates accident mitigation measures in these structures that are so important to the nation. The data assessed in the study were: foundation height, terrain height, reservoir capacity, crown length and reservoir area. They were subjected to Pearson's frequency comparison test and all fit the hypotheses suggested in the study, concluding that the data follow Benford's law and ensuring the consistency of the NDSS database.