[R] ANOVA Estimated effects may be unbalanced

Jim Lemon jim at bitwrit.com.au
Mon May 20 03:00:32 CEST 2013

On 05/20/2013 10:52 AM, Luis Fernando García Hernández wrote:
> Dear All,
> This is a data relating leg shaking on differenntre treatments. I reused
> several individuals so I want to know 1) if there are significative
> differences on shaking per treatment and 2) if the reused individuals
> presented some effect or significative variation.
> Nevertehless when I make
> model1<-aov(Legshaking~Idmale*Idfemale*tratament)
> or
> model1<-aov(Legshaking~Idmale+Idfemale+tratament)
> I get
> 13744 out of 13824 effects not estimable
> Estimated effects may be unbalanced
> What could be wrong here? Any advice about how to handle this data in R
> will be welcome!
Hi Luis,
Are you sure that you don't want to compare males and females as a group 
and not every individual male and female?


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