How the Maximal Evidence of P -Values Against Point Null Hypotheses Depends on Sample Size.

Minimum Bayes factors are commonly used to transform two-sidedp-values to lower bounds on the posterior probability of the null hypothesis. Several proposals exist in the literature, but none of them depends on the sample size. However, the evidence of ap-value against a point null hypothesis is kno...

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Publicado en:American Statistician Vol. 70; no. 4; pp. 335 - 342
Autores principales: Held, Leonhard, Ott, Manuela
Formato: Artículo
Publicado: Taylor & Francis Ltd Nov2016
Materias:
Acceso en línea:Ver este registro en EBSCOhost
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        10.1080/00031305.2016.1209128
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        atl: How the Maximal Evidence of P -Values Against Point Null Hypotheses Depends on Sample Size.
      aug:
        au:
          Held, Leonhard
          Ott, Manuela
        affil: Department of Biostatistics Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
      su:
        Eyewitness accounts
        Null hypothesis
        False positive error
        Sampling (Process)
        Experimental design
      sug:
        subj:
          Eyewitness accounts
          Null hypothesis
          False positive error
          Sampling (Process)
          Experimental design
      keyword:
        Evidence
        F-Test
        Minimum Bayes factor
        p-value
        Sample size
        t-Test
        Evidence
        F-Test
        Minimum Bayes factor
        p-value
        Sample size
        t-Test
      ab: Minimum Bayes factors are commonly used to transform two-sidedp-values to lower bounds on the posterior probability of the null hypothesis. Several proposals exist in the literature, but none of them depends on the sample size. However, the evidence of ap-value against a point null hypothesis is known to depend on the sample size. In this article, we considerp-values in the linear model and propose new minimum Bayes factors that depend on sample size and converge to existing bounds as the sample size goes to infinity. It turns out that the maximal evidence of an exact two-sidedp-value increases with decreasing sample size. The effect of adjusting minimum Bayes factors for sample size is shown in two applications.
      pubtype: Academic Journal
      doctype: Article
      src: R
    language: English
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