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apperas
2003 Oct 21
3
explaining curious result of aov
Hello. I have come across a curious result that I cannot explain.
Hopefully, someone can explain this. I am doing a 1-way ANOVA with 6
groups (example: summary(aov(y~A)) with A having 6 levels). I get an F
of 0.899 with 5 and 15 df (p=0.51). I then do the same analysis but
using data only corresponding to groups 5 and 6. This is, of course,
equivalent to a t-test. I now get an F of 142.3