Hi R-experts, I'm running into some trouble with a multi-level factor. My apologies if this is a basic question, but I have been told there are different ways to do this and would like to see what you think.
In the dataset I'm looking at, subjects named pictures multiple times (e.g., they named each picture 8 times), so Repetition is a multi-level factor. How would you enter it into a model? As a factor? Or a numeric predictor? I understand the pros and cons of both approaches, but there seems to be some debate about this. I am not interested in the individual contrasts between different levels of the Repetition factor, but only need the equivalent of an F value in a standard ANOVA for that factor. And what about dependencies between levels? Many thanks in advance, Agnieszka ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
