Revistes Publicacions URV: SORT - Statistics and Operations Research Transactions> 2015

On the interpretation of differences between groups for compositional data

  • Identification data

    Identifier: RP:2432
    Handle: https://hdl.handle.net/20.500.11797/RP2432
    Authors:
    Mateu-Figueras, GlòriaDaunis-i-Estadella, JosepMartín-Fernández, Josep-Antoni
    Abstract:
    Social polices are designed using information collected in surveys; such as the Catalan TimeUse survey. Accurate comparisons of time use data among population groups are commonlyanalysed using statistical methods. The total daily time expended on different activities by asingle person is equal to 24 hours. Because this type of data are compositional, its sample spacehas particular properties that statistical methods should respect. The critical points required tointerpret differences between groups are provided and described in terms of log-ratio methods.These techniques facilitate the interpretation of the relative differences detected in multivariateand univariate analysis.

  • Others:

    URV's Author/s: Mateu-Figueras, Glòria Daunis-i-Estadella, Josep Martín-Fernández, Josep-Antoni
    Keywords: Log-ratio transformations, MANOVA, perturbation, simplex, subcomposition
    Abstract: Social polices are designed using information collected in surveys; such as the Catalan TimeUse survey. Accurate comparisons of time use data among population groups are commonlyanalysed using statistical methods. The total daily time expended on different activities by asingle person is equal to 24 hours. Because this type of data are compositional, its sample spacehas particular properties that statistical methods should respect. The critical points required tointerpret differences between groups are provided and described in terms of log-ratio methods.These techniques facilitate the interpretation of the relative differences detected in multivariateand univariate analysis.
    Journal publication year: 2015
    Publication Type: info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article

  • Keywords:

    Log-ratio transformations, MANOVA, perturbation, simplex, subcomposition

  • Documents:

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