Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions

Detalhes bibliográficos
Autor(a) principal: Peixoto, Cleide Silveira Brasil
Data de Publicação: 2015
Outros Autores: Cirillo, Marcelo Angelo, Silva, Augusto Maciel da
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250
Resumo: 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 samples, noticeable in linear functions formed by binomial proportions. Current analysis improves this method used in inferring from binomial linear functions, taking into consideration zero-inflated samples. Improvement was assessed byMonte Carlosimulation techniques within different scenarios. Results show that the improvement proposed is recommended in situations in which sampling proportions are close to 0,5 and produce a maximum variance of the binomial proportions involved in the composition of the linear function. 
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spelling Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functionsbinomial familiesprobability of coveragesimulationProbabilidade e EstatísticaThe 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 samples, noticeable in linear functions formed by binomial proportions. Current analysis improves this method used in inferring from binomial linear functions, taking into consideration zero-inflated samples. Improvement was assessed byMonte Carlosimulation techniques within different scenarios. Results show that the improvement proposed is recommended in situations in which sampling proportions are close to 0,5 and produce a maximum variance of the binomial proportions involved in the composition of the linear function. Universidade Estadual De Maringá2015-01-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionIntervalos de Confiançaapplication/pdfapplication/mswordhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2125010.4025/actascitechnol.v37i1.21250Acta Scientiarum. Technology; Vol 37 No 1 (2015); 47-54Acta Scientiarum. Technology; v. 37 n. 1 (2015); 47-541806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMengporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250/pdf_60http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250/751375142437Peixoto, Cleide Silveira BrasilCirillo, Marcelo AngeloSilva, Augusto Maciel dainfo:eu-repo/semantics/openAccess2015-01-12T11:44:43Zoai:periodicos.uem.br/ojs:article/21250Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2015-01-12T11:44:43Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
title Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
spellingShingle Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
Peixoto, Cleide Silveira Brasil
binomial families
probability of coverage
simulation
Probabilidade e Estatística
title_short Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
title_full Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
title_fullStr Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
title_full_unstemmed Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
title_sort Improvement of the Wald method applied to the evaluation of zero-inflated binomial linear functions
author Peixoto, Cleide Silveira Brasil
author_facet Peixoto, Cleide Silveira Brasil
Cirillo, Marcelo Angelo
Silva, Augusto Maciel da
author_role author
author2 Cirillo, Marcelo Angelo
Silva, Augusto Maciel da
author2_role author
author
dc.contributor.author.fl_str_mv Peixoto, Cleide Silveira Brasil
Cirillo, Marcelo Angelo
Silva, Augusto Maciel da
dc.subject.por.fl_str_mv binomial families
probability of coverage
simulation
Probabilidade e Estatística
topic binomial families
probability of coverage
simulation
Probabilidade e Estatística
description 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 samples, noticeable in linear functions formed by binomial proportions. Current analysis improves this method used in inferring from binomial linear functions, taking into consideration zero-inflated samples. Improvement was assessed byMonte Carlosimulation techniques within different scenarios. Results show that the improvement proposed is recommended in situations in which sampling proportions are close to 0,5 and produce a maximum variance of the binomial proportions involved in the composition of the linear function. 
publishDate 2015
dc.date.none.fl_str_mv 2015-01-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Intervalos de Confiança
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250
10.4025/actascitechnol.v37i1.21250
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250
identifier_str_mv 10.4025/actascitechnol.v37i1.21250
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250/pdf_60
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/21250/751375142437
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/msword
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 37 No 1 (2015); 47-54
Acta Scientiarum. Technology; v. 37 n. 1 (2015); 47-54
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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