Poder estatístico e coeficiente de variação em experimentos com bovinos de corte

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Vaz, Marcos André Braz
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Santa Maria
BR
Zootecnia
UFSM
Programa de Pós-Graduação em Zootecnia
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://repositorio.ufsm.br/handle/1/4386
Resumo: This study was conducted to estimate power of tests in Analysis of Variance (ANOVA) in beef cattle experiments, determine sample size and classify the coefficient of variation. Data was collected from thesis and dissertations of the Program of Post-Graduation in Animal Science of Federal University of Santa Maria (PPGZ-UFSM) among the years of 1991 to 2012, in beef cattle production area using ANOVA. Power was estimated by assumption of non central F distribution to the alternative hypothesis in ANOVA. The number of replications for treatments was estimated by power of 80% and interval of [0,4 ; 2,0] to effect size. Classification of coefficient of variation was based on proposed by Garcia (1989) using mean and standard deviation, and Costa et al. (2002) using median and pseudo-sigma. Power of tests shows two frequency peaks of experiments with low and high power. The recommended average number of replication per treatments was among 7 and 10 replications. Classification of coefficient of variation was proposed by low, medium and high, differently from literature that considers the intervals low, medium, high and very high.