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Application of Benford's Law in detecting accounting fraud in the Financial Sector
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Orientador(es)
Resumo(s)
Este estudo pretende aplicar a Lei de Benford na deteção de fraude contabilística, através da análise dos resultados líquidos das empresas financeiras cotadas durante os anos de 2003 a 2012. O principal objetivo é verificar se esta lei se mantém após a crise de 2007/2008. Como medida de significância estatística utilizou-se o teste Z com um intervalo de confiança de 95%. Confirma-se que a nossa amostra segue a lei de Benford à exceção dos resultados líquidos positivos após o ano 2008 para os dígitos 1, 6 e 9,o que demonstra o efeito da crise de 2007/2008 nas empresas financeiras.
This study aims to apply Benford's Law in detecting accounting fraud on the analysis of net income from listed financial companies, through years 2003-2012. Its main purpose is to confirm whether Benford?s Law is still valid after the 2007/2008 financial crisis. To measure the statistical significance, a Z test with a 95% confidence interval was employed. With the exception of a sample showing positive net income after 2008, for the digits 1, 6 and 9, it was confirmed that our sample follows Benford's Law which demonstrates the effect of the 2007/2008 crises on financial companies.
This study aims to apply Benford's Law in detecting accounting fraud on the analysis of net income from listed financial companies, through years 2003-2012. Its main purpose is to confirm whether Benford?s Law is still valid after the 2007/2008 financial crisis. To measure the statistical significance, a Z test with a 95% confidence interval was employed. With the exception of a sample showing positive net income after 2008, for the digits 1, 6 and 9, it was confirmed that our sample follows Benford's Law which demonstrates the effect of the 2007/2008 crises on financial companies.
Descrição
Mestrado em Finanças
Palavras-chave
Lei de Benford Resultado Liquido Fraude Contabilística Subprime Benford's Law Net Income Accounting Fraud
Contexto Educativo
Citação
Silva, Amélia Sofia Carvalho Damião da (2013). "Application of Benford's Law in detecting accounting fraud in the Financial Sector". Dissertação de Mestrado, Universidade de Lisboa. Instituto Superior de Economia e Gestão.
Editora
Instituto Superior de Economia e Gestão