SciELO - Scientific Electronic Library Online

 
vol.32 número3Inconsistencia del Coeficiente de Variación para expresar la variabilidad de un experimento en un modelo de Análisis de VarianzaEfectos de una mezcla de oligogalacturónidos en la morfología de hortalizas de importancia económica índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Cultivos Tropicales

versão impressa ISSN 0258-5936

Resumo

RAMIRO VASQUEZ, Edison  e  CABALLERO NUNEZ, Alberto. When the assumption of homocedasticidad in variables with binomial distribution fails. cultrop [online]. 2011, vol.32, n.3, pp.46-51. ISSN 0258-5936.

The process of Monte Carlo simulation was used to generate populations of random variables with Binomial distribution with homogeneous or heterogeneous variance; for 5, 10 and 30 observations by experimental unit (n) and likelihood of success of the event of 0.10, 0.20,..., 0, 90 (p). It consisted of experiments in randomized block design with 3, 5 and 9 treatments (t); 4 and 8 replicas (r); for each combination t-r-n, generated 100 experiments. By way of a reference point of discussion to have, included the variant of other 100 experiments of variables with Normal distribution, with similar mean and variance of the experiments of data with Binomial distribution. It was found that the behavior of the indicators: percentage of experiments in which there is a rejection of the hypothesis H0; the power in the ANOVA; minimum difference detected in the experiment, as well as the number of differences between treatments is similar within each alternative analysis through three variants; showing a marked influence the number of observations per experimental unit and the number of replicas in these indicators.

Palavras-chave : homogeneity of variance; homocedasticidad; variables binomials; assumptions of ANOVA.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )