Search found 360 matches

by reason180
Fri Apr 03, 2026 2:23 am
Forum: General
Topic: Partial Eta Square for Post Hoc repeated measures ANOVA
Replies: 1
Views: 3151

Re: Partial Eta Square for Post Hoc repeated measures ANOVA

I'm pretty sure you can't get those effect sizes in jamovi. If you try another well-know stats app, probably the most you'll get is Cohen's d effect sizes.
by reason180
Wed Mar 04, 2026 11:59 am
Forum: Statistics
Topic: Chi-square test not working because of missing values
Replies: 10
Views: 62146

Re: Chi-square test not working because of missing values

'
Hi. This seems like a simple solution (see the screen shot below).
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Picture_GoodnessOfFitWorks.png
Picture_GoodnessOfFitWorks.png (61.81 KiB) Viewed 23555 times
by reason180
Wed Oct 22, 2025 12:41 am
Forum: Help
Topic: gamlj3: Trying to achieve cross-application replication of generalized linear mixed effects model
Replies: 5
Views: 44252

Re: gamlj3: Trying to achieve cross-application replication of generalized linear mixed effects model

Thanks. The JASP file did include the interecept, it's just that a test of the intercept location wasn't included in the output (the model runs the same regardless of whether the slope is tested) . . . - Untitled.png - Consistent with what you wrote about the optimizer, I did come across this post, ...
by reason180
Mon Oct 20, 2025 8:16 pm
Forum: Help
Topic: gamlj3: Trying to achieve cross-application replication of generalized linear mixed effects model
Replies: 5
Views: 44252

gamlj3: Trying to achieve cross-application replication of generalized linear mixed effects model

@mcfanda I know it's sometimes difficult to address questions about why statistical results differ from one application (jamovi) to another, very similar application. However, I do think it's scientifically useful to strive for cross-application replicability. I have a generalized linear mixed effec...
by reason180
Sat Oct 11, 2025 3:01 am
Forum: Help
Topic: Binary Outcomes in GAMLJ3 - No way to pick reference group
Replies: 4
Views: 41596

Re: Binary Outcomes in GAMLJ3 - No way to pick reference group

It appears that the ordering of the two levels of your dichotomous dependent variable determines the 'direction' of the computation. You can easily reorder the levels as illustrated below. (And if it so happens that your dependent variable is a computed variabe, I believe the ordering is determined ...
by reason180
Mon Sep 29, 2025 9:59 pm
Forum: jamovi development
Topic: Feature suggestion: downloadable log (against cheating)
Replies: 2
Views: 40962

Re: Feature suggestion: downloadable log (against cheating)

I've been under the assumption that AI cannot yet produce a jamovi omv file in response to a prompt. So if a student submits a jamovi file, doesn't that show that a human produced it, and not AI?
by reason180
Tue Sep 09, 2025 9:15 pm
Forum: Help
Topic: On mac but not Windows, NA converts to "0" when using Rj+ to write to the jamovi spreadsheet
Replies: 2
Views: 38393

On mac but not Windows, NA converts to "0" when using Rj+ to write to the jamovi spreadsheet

In my class of students, some are using jamovi 2.7.6 on Windows; others are using it on macs. When using Rj+ to write data back to the jamovi spreadsheet, deliberately-created NA values (in R) properly show up as missing values the jamovi spreadheet if the student is using Windows. However, for thos...
by reason180
Fri Sep 05, 2025 1:56 am
Forum: Statistics
Topic: To pool or not to pool, that is the question: Change to Anova RM post-hoc tests in version 2.7.6
Replies: 8
Views: 109824

Re: To pool or not to pool, that is the question: Change to Anova RM post-hoc tests in version 2.7.6

I don't know that the issue ever concerned post-hoc tests. Rather, it has to do with the error variances for the the estimated marginal means.
by reason180
Wed Aug 27, 2025 3:08 pm
Forum: Help
Topic: Mixed ANOVA and missing data
Replies: 2
Views: 52389

Re: Mixed ANOVA and missing data

Hi. In any repeated-measures ANOVA, including mixed ANOVA, if a participant has any missing cells, all of that participant's data is excluded from all aspect of the analysis. This applies not just to jamovi but to any stats program. (Note that there is an advanced, alternative to ANOVA that uses the...