A study of the score test in disc rimination poisson and zero-inflated poisson models
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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Estadual de Maringá
2013
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| _version_ | 1876442602730946560 |
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| author | Vanessa Siqueira Peres da Silva |
| author_facet | Vanessa Siqueira Peres da Silva |
| contents | A study of the score test in disc rimination poisson and zero-inflated poisson models Vanessa Siqueira Peres da Silva Marcelo Ângelo Cirillo Juliana Garcia Cespedes Ingeniería Zero score test inflated Poisson Monte Carlo simulation 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 thes e models support. Depending on the sample size and null observations number the Poisson model can be used . Based on this question , the objective of this paper is to evaluate the properties of Type I error and power of the score test (proposed by Van Den Broek (1995) to discriminate the Poisson and Zero-inflated Poisson models) and ascertain the most appropriate model to represent a sample with excess zeros with out compromising the statistical inference. Through Monte Carlo simulation we concluded that when considering a sample of size at least n = 40 with 30% of the null observations, the score test had a high disc riminatory power between the ZIP and Poisson model indicating that in fact is relevant the use of the ZIP model. 2013 artículo científico 1806-2563 https://www.redalyc.org/articulo.oa?id=303229362018 en http://www.redalyc.org/revista.oa?id=3032 Acta Scientiarum. Technology application/pdf Universidade Estadual de Maringá Acta Scientiarum. Technology (Brasil) Num.2 Vol.35 |
| format | Artículo científico |
| id | redalyc_303229362018 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | A study of the score test in disc rimination poisson and zero-inflated poisson models Vanessa Siqueira Peres da Silva Ingeniería Zero score test inflated Poisson Monte Carlo simulation A study of the score test in disc rimination poisson and zero-inflated poisson models Vanessa Siqueira Peres da Silva Marcelo Ângelo Cirillo Juliana Garcia Cespedes Ingeniería Zero score test inflated Poisson Monte Carlo simulation 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 thes e models support. Depending on the sample size and null observations number the Poisson model can be used . Based on this question , the objective of this paper is to evaluate the properties of Type I error and power of the score test (proposed by Van Den Broek (1995) to discriminate the Poisson and Zero-inflated Poisson models) and ascertain the most appropriate model to represent a sample with excess zeros with out compromising the statistical inference. Through Monte Carlo simulation we concluded that when considering a sample of size at least n = 40 with 30% of the null observations, the score test had a high disc riminatory power between the ZIP and Poisson model indicating that in fact is relevant the use of the ZIP model. 2013 artículo científico 1806-2563 https://www.redalyc.org/articulo.oa?id=303229362018 en http://www.redalyc.org/revista.oa?id=3032 Acta Scientiarum. Technology application/pdf Universidade Estadual de Maringá Acta Scientiarum. Technology (Brasil) Num.2 Vol.35 |
| title | A study of the score test in disc rimination poisson and zero-inflated poisson models |
| topic | Ingeniería Zero score test inflated Poisson Monte Carlo simulation |
| url | https://www.redalyc.org/articulo.oa?id=303229362018 |