[Bug]: data filter ignored in independent t-test

[rcsapo79]

JASP Version

0.95.4

Commit ID

No response

JASP Module

T-Tests

What analysis are you seeing the problem on?

Independent samples t-test

What OS are you seeing the problem on?

macOS Intel

Bug Description

When trying to run an independent t-test using a grouping variable with 3 characteristic values of which one was filtered out, JASP complains about the maximum number of levels being 2.

Expected Behaviour

The data that were filtered out should be ignored in order to facilitate the test. As a matter of fact, this did work in previous versions…

Steps to Reproduce

1. Create variable group with values 1, 1, 2, 2, 3, 3
2. Create variable data with 6 random numbers
3. Filter out values 3 of variable group
4. Run independent t-test

Log (if any)

No response

More Debug Information

No response

Final Checklist

• I have included a screenshot showcasing the issue, if possible.
• I have included a JASP file (zipped) or data file that causes the crash/bug, if applicable.
• I have accurately described the bug, and steps to reproduce it.

[github-actions]

@rcsapo79, thanks for taking the time to create this issue. If possible (and applicable), please upload to the issue website (#3954, attaching to an email does not work) a screenshot showcasing the problem, and/or a compressed (zipped) .jasp file or the data file that causes the issue. If you would prefer not to make your data publicly available, you can send your file(s) directly to us, issues@jasp-stats.org

[tomtomme]

thx for the report.
I cannot replicate this

If the problem persist you could:

• post your system info:
• try an upgrade of your Operating System
• share your .jasp file. ZIP it or rename it to .zip first. Then drag&drop it here (email attachment does not work).
• upload logs, see Logging Guide: https://github.com/jasp-stats/jasp-desktop/blob/stable/Docs/user-guide/logging-howto.md

Also please tell us if something of this helped or not :)
Thx again!

[rcsapo79]

Thanks for the reply. Could it be that you're working on JASP 0.19.x? Version 0.19.3 works for me too. The current version 0.95.4 doesn't.

[tomtomme]

I am working with:

-------- Application Info --------
JASP Version: JASP 0.95.4
Build Branch: HEAD
Build Date: Oct 13 2025 12:13:12 (Netherlands)
Last Commit: 579212a309d0dd324aba3df19e8c51edb8dbc133

-------- Basic Info --------
Operating System: KDE Flatpak runtime
Product Version: 6.9
Kernel Type: linux
Kernel Version: 6.12.48-1-MANJARO
Architecture: x86_64
Install Path: /app/bin
Platform Name: wayland
System Local: de_DE

make sure, that you have not two versions installed at the same time