Análise estatística em qualidade física de uma ração peletizada

Abstract

This course completion work was developed with a statistical-comparative approach, aiming to analyze the physical quality of four diferente pelletized feed productions. The main objective was to make comparisons between these productions, in order to identify, with a statistical basis, the one that presented the best performance in the pellet yield parameter. To carry out the analyzes, twenty samples were collected from each production during the end stage of the manufacturing process, specifically in the shipping sector. From these samples, physical resistense teste of the pellets and determination of the index durability pellet (PDI) were conducted. The results obtained were stored in files in the TXT format, in order to anable statistical analysis through the R software. The statistical analyzes included the description of the data, evaluation of the variables, transformation to normal distribuition, application of the Shapiro-Wilk normality test and, subsequently, the analysis of variance (ANOVA). The significant results were subjected to Tukey’s multiple comparison test, allowing to statistically identify the production with better management and performance in the end product.