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Gislene Araujo Pereira, Mariana Resende, Marcelo Ângelo Cirillo
Pág. e49929
Multicollinearity is detected via regression models, where independent variables are strongly correlated. Since they entail linear relations between observed or latent variables, the structural equation models (SEM) are subject to the multicollinearity e...
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Wederson Leandro Ferreira, Marcelo Ângelo Cirillo (Author)
Pág. e34995
This work proposes an evaluation ? through data simulations ? of optimality criteria A and D in mixture designs built from a rotational design, considering a normal model and exploring the edge of zero in parts of simplex components, in addition to the a...
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André Luís Alves Costa, Carla Regina Guimarães Brighenti, Marcelo Angelo Cirillo
Pág. e34953
The main hypothesis of correspondence analysis is given by the independence between the levels of categorical variables. Due to violation of this hypothesis, this study aims to improve the technique of correspondence analysis, providing a new approach fo...
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Manoel Vitor de Souza Veloso, Marcelo Angelo Cirillo
Pág. 193 - 200
Current study employs Monte Carlo simulation in the building of a significance test to indicate the principal components that best discriminate against outliers. Different sample sizes were generated by multivariate normal distribution with different num...
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Carla Guimarães Brighenti, Yola Serpa Miranda, Mariana Resende, Marcelo Angelo Cirillo, Deodoro Magno Brighenti
Pág. 99 - 105
Research with honeybee needs experimentation in cages. In laboratory bioassays to assess the lifetime of Apis mellifera, each sampling unit contained a group of bees confined in a cage. Since current is a longitudinal analysis to assess the effect of tim...
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Cleide Silveira Brasil Peixoto, Marcelo Angelo Cirillo, Augusto Maciel da Silva
Pág. 47 - 54
The Wald method is grounded on a statistic based on the asymptotic approximation of normal distribution. The method has shown incoherent values at a nominal level of confidence for the probability of coverage in intervallic estimates, mainly in small sam...
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Tiago Martins Pereira, Marcelo Ângelo Cirillo, Fernando Luiz Pereira de Oliveira
Pág. 643 - 649
Recently Knüsel (2008) proposed a new method of orthogonal rotation based on chi-square statistic, the Chisquaremax criterion. However, its performance has not yet been evaluated for the effect of outliers. Thus, we assessed the factorial model with Chis...
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Larissa Ribeiro de Andrade, Marcelo Angelo Cirillo, Luiz Alberto Beijo
Pág. 93 - 99
The bootstrap method is generally performed by presupposing that each sample unit would show the same probability of being re-sampled. However, when a sample with outliers is taken into account, the empirical distribution generated by this method may be ...
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Vanessa Siqueira Peres da Silva, Marcelo Angelo Cirillo, Juliana Garcia Cespedes
Pág. 333 - 337
In many experimental situations the sample may present excess zero observations and generally are used probabilistic models for zero inflated to represent them. However no one knows precisely the amount of zero observations that these models support. Dep...
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Augusto Maciel da Silva, Marcelo Ângelo Cirillo
Pág. 303 - 307
A inferência estatística em populações binomiais contaminadas está sujeita a erros grosseiros de estimação, uma vez que as amostras não são identicamente distribuídas. Por esse problema, este trabalho tem por objetivo determinar qual a melhor constante d...
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