I've tried to run a Tukey post-hoc but keep getting this weird error,
whether the aov was significant or not. treat_code is a dummy
variable, but that shouldn't matter. Any suggestions?
Thanks
Amy
> summary(aov(EtoH~treat_code, mydata))
Df Sum Sq Mean Sq F value Pr(>F)
treat_code 1 16.44 16.44 11.027 0.001014 **
Residuals 287 427.91 1.49
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
> TukeyHSD(aov(EtoH~treat_code, mydata))
Error in TukeyHSD.aov(aov(EtoH ~ treat_code, mydata)) :
no factors in the fitted model
In addition: Warning message:
In replications(paste("~", xx), data = mf) :
non-factors ignored: treat_code
--
Amy Freitag
Ph.D. student, Marine Science and Conservation
Nicholas School for the Environment
Duke University
ae...@duke.edu
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