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2010 Oct 18
0
Mixed Design ANOVA - singular error model
...has
two levels. In addition to my number of levels in the within subject
variable being very large, one other 'feature' of my data is that it
is not balanced on the between subject variable. I have attached a
copy of my data for reference.
To run the ANOVA, I did this:
summary(aov(Result ~ StimulusID * Group +
Error(ParticipantToken/(StimulusID + Group)), data = data))
My results were roughly as I had expected, but at the end of the
output I have the warning that the model is singular. I have seen this
warning listed in other help requests, but from what I saw there this
meant that one of my v...