[R-sig-eco] random effects in a linear mixed model

[Elizabeth Green]

On Aug 19, 2011, at 2:00 AM, r-sig-ecology-request at r-project.org wrote:

>
>   1. Random effects in a linear mix model (Edgar Torres)
>

Edgar, the random effects represent the variable that has an effect,  
but not an effect that is likely to be biologically interesting, in  
this case, your fishing vessel. The effects you want to test are the  
fixed effects, in this case time, because you want to see how your  
variable varies by year, accounting for the random effects of the  
different vessels fishing.

bessie

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bessie Green
  907-388-4496
http://mercury.bio.uaf.edu/~elizabeth_green/