Displaying 1 result from an estimated 1 matches for "treatment_ordered".
2011 Apr 13
0
ordinal predictor in anova
...e 1, 24, 25, 50,55). Coding it simply as a categorical
variable is also not ok because there is a hierarchy between the
groups. This is the definition of ordinal variable.
I have defined the ordinal variable (the order is from a priori prediction)
#NOW DEFINING THE ORDERED VARIABLE:
sugars$treatment_ordered<-ordered(sugars$treatment,c("AA", "AB","AC",
"AD","AE"))
The problem is that when I run the ANOVA or perform model
comparison, R is giving me the same results if I use either
"treatment" as a predictor in the model or "tr...