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4.3568
2012 Mar 22
2
Order of terms in formula changes aov() results
Hello, This one is very perplexing. I have teacher observation data,
with factors teacher ID, observer ID, component, grade and subject. When
I do this,
aov(data=ratings.prin.22, rating ~ obsid.f + tid.f + subject.f + grade.f + comp.f)
I get this:
Terms:
obsid.f tid.f grade.f comp.f Residuals
Sum of Squares 306.23399 221.38173 1.70000 14.52831 279.05780
Deg. of