[R] Nested anova with unbalanced design and corrected sample size for spatial autocorrelation

Ben Bolker bolker at ufl.edu
Thu Sep 13 04:35:33 CEST 2007


   


Francesc Montan� <francesc.montane <at> ctfc.es> writes:

> 
> 
> Hello all,
> 
> This may be a simple question to answer, but I'm a little bit stumped with
> respect to the calculation of the F statistics in nested  anovas with
> unbalanced design in R.


  I would strongly recommend getting a copy of Pinheiro and
Bates (2000) and going through it.  aov() is out of the question, and it's
probably better to incorporate spatial correlation
directly in the model than to adjust degrees of freedom
to account for it.

  good luck,
     Ben Bolker
>



More information about the R-help mailing list