All Questions
7 questions
1
vote
0
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2k
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Post-hoc tukey test after repeated measures ANOVA in R taking into account spherecity
I am trying to do some repeated measure anova in R.
Consider the following data.
...
- 477
1
vote
0
answers
90
views
Can I use RM-ANOVA with unbalanced within-subject design with sphericity violated?
I have data from an EEG experiment. Originally, the design was balanced, but because in EEG you loose a lot of data to noise and malfunctioning equipment, the end-result is unbalanced data.
I am ...
- 211
2
votes
1
answer
504
views
HLM vs. repeated measures ANOVA -- sphericity concerns?
All,
Say I have a 2 (between) x 4 (repeated measures) mixed factorial design. I was going to analyze it with ANOVA, but normality issues and sphericity concerns have made that not a good idea.
Are ...
- 989
1
vote
0
answers
456
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Repeated-measures multiple regression that takes care of sphericity in R
I'm looking for a way to run a repeated-measures multiple regression in R, which would take care of sphericity - either by applying some corrections (such as Huynh-Feldt), or by avoiding the problem ...
- 69
4
votes
1
answer
4k
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Why is ezANOVA not giving me Mauchly´s test of sphericity, even though I belive I have more than 2 levels of within-Ss variables?
I am trying to do learn how to do a repeated measure in R using ezANOVA and I have used the following command:
...
- 41
5
votes
1
answer
660
views
Issues with the Huynh-Feldt values using either Anova or ezANOVA in R?
Is there an issue with the output of the Huynh-Feldt correction when running an ANOVA for both between and within factors (mixed design) in R? My issue is that when I run a 'within-subject (only)' ...
- 51
20
votes
5
answers
25k
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Post-hocs for within subjects tests?
What is the preferred method for for conducting post-hocs for within subjects tests? I've seen published work where Tukey's HSD is employed but a review of Keppel and Maxwell & Delaney suggests ...
- 19k