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The analysis of proportions in agricultural experiments by a generalized linear mixed model

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  • J. Jansen
  • J. A. Hoekstra

Abstract

This paper is concerned with the statistical analysis of proportions involving extra‐binomial variation. Extra‐binomial variation is inherent to experimental situations where experimental units are subject to some source of variation, e.g. biological or environmental variation. A generalized linear model for proportions does not account for random variation between experimental units. In this paper an extended version of the generalized linear model is discussed with special reference to experiments in agricultural research. In this model it is assumed that both treatment effects and random contributions of plots are part of the linear predictor. The methods are applied to results from two agricultural experiments.

Suggested Citation

  • J. Jansen & J. A. Hoekstra, 1993. "The analysis of proportions in agricultural experiments by a generalized linear mixed model," Statistica Neerlandica, Netherlands Society for Statistics and Operations Research, vol. 47(3), pages 161-174, September.
    • Handle: RePEc:bla:stanee:v:47:y:1993:i:3:p:161-174
    DOI: 10.1111/j.1467-9574.1993.tb01414.x
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