Search found 298 matches
- Thu Jul 25, 2024 2:20 pm
- Forum: jamovi development
- Topic: issue with Test for Sphericity ('Singularity error')
- Replies: 4
- Views: 504
Re: issue with Test for Sphericity ('Singularity error')
Is the problem simply that, for at least one pair of the y columns, the difference scores are all the same, so the variance is zero, and ANOVAs don't work when zero becomes a denominator of an equation? See below.
- Thu Jul 25, 2024 4:59 am
- Forum: jamovi development
- Topic: issue with Test for Sphericity ('Singularity error')
- Replies: 4
- Views: 504
Re: issue with Test for Sphericity ('Singularity error')
This repeated-measures ANOVA (2 by 3 by 6, with eight participants) does work, and includes sphericity tests (jamovi 2.5.6 for Windows).
- Fri Jul 19, 2024 1:23 pm
- Forum: Statistics
- Topic: How to handle max and min outputs in a statistical analysis?
- Replies: 7
- Views: 416
Re: How to handle max and min outputs in a statistical analysis?
Are there just a few <min and >max values? If so, then what you're seeing as a problem (with this pseudo-Winsorization I've proposed) may be a benefit in that it prevents outliers from distorting your results. Alternatively, if there are lots of <min and >max values, then you really do have a proble...
- Thu Jul 18, 2024 2:28 pm
- Forum: Statistics
- Topic: How to handle max and min outputs in a statistical analysis?
- Replies: 7
- Views: 416
Re: How to handle max and min outputs in a statistical analysis?
To me, a straightforward and convincing approach would be to convert each instance of "max" to equal the value of the largest non-max value in your data set. Likewise, convert each "min" the the value of the smallest non-min value you measured. (This approach is very similar [tho...
- Sun Jun 16, 2024 12:16 am
- Forum: Help
- Topic: Edit tab not working
- Replies: 1
- Views: 536
Re: Edit tab not working
The edit tab is for formatting any textual annotations you might add to the analysis output. It's not for formatting the spreadsheet. You can't format the styling of the spreadsheet cells.
- Wed Jun 12, 2024 3:53 pm
- Forum: Statistics
- Topic: Testing whether the rank ordering of items between two group
- Replies: 10
- Views: 8327
Re: Testing whether the rank ordering of items between two group
If you're willing to constrain the statistical question a little: Instead of asking whether "the rank ordering between the two groups is significantly different," you could ask the following four questions. Is there an effect of group on the ranked value of Animal 1? Is there an effect of ...
- Tue Jun 11, 2024 10:50 pm
- Forum: General
- Topic: Effect size Linear mixed models GAMJj
- Replies: 8
- Views: 882
Re: Effect size Linear mixed models GAMJj
Thanks! (Also, I meant to write: "why wouldN'T the denominator for Cohen's d suffer from the same complication/ambiguity")
- Tue Jun 11, 2024 1:28 pm
- Forum: General
- Topic: Effect size Linear mixed models GAMJj
- Replies: 8
- Views: 882
Re: Effect size Linear mixed models GAMJj
I wonder, why would the denominator for Cohen's d suffer from the same complication/ambiguity that other LMM effect-size measures suffer from? Why would the denominator for Cohen's d need to somehow account for variances explained by random coefficients?
- Fri Jun 07, 2024 4:15 am
- Forum: General
- Topic: Effect size Linear mixed models GAMJj
- Replies: 8
- Views: 882
Re: Effect size Linear mixed models GAMJj
How about this approach? https://cran.r-project.org/web/packages ... tics.html
- Wed May 29, 2024 5:04 pm
- Forum: Statistics
- Topic: ANCOVA & Permutation test
- Replies: 1
- Views: 1861
Re: ANCOVA & Permutation test
I pretty sure you can't do that in jamovi (unless you want to use the Rj interface to R and do the permutation test in R).