Behavior of the total costs of production in the poultry industry in the state of Paraná: a study based on the analysis of multiple linear regression

• Autor(a) principal: Oliveira, Letícia de
• Data de Publicação: 2020
• Outros Autores: Tonin, Paulo César, Vicenzi, Silvana Lígia
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Produção Online
• Texto Completo: https://www.producaoonline.org.br/rpo/article/view/3242
• topic: Productivity. Mortality. Multicollarity.; Produtividade. Mortalidade. Multicolinearidade.

The objective of this research was to determine a mathematical function to describe behavioral patterns of total costs, as a function of variables, productivity, mortality, feed intake and hours worked in a manual egg production aviary. The data collected were related to the period from March 2016 to January 2017. After the identification of the data, multiple linear regression analysis was applied to verify the degree of relationship between the studied variables and also to identify the equation capable of linearizing the behavior of the "total costs" as a function of the behavior of the independent variables. In order to validate the models studied, in addition to the analyzes involving the coefficient of determination, the t statistic and tests of significance of coefficients, statistical tests were performed involving the analysis of the presence of multicollinearity, autocorrelation of residues and the normality of residues. The multiple linear regression presented a coefficient of determination of 0.95, indicating that the variables "productivity" and "mortality" account for 95% of the changes in "total production costs". In view of the results obtained, it was possible to conclude that there was correlation and it was possible to determine a mathematical equation for the behavioral patterns of the total costs, as a function of the variables "productivity" and "mortality".