[Bug]: Independent Samples t-test unable to calculate when 3 groups present but one group filtered out. #2893
Description
JASP Version
0.19.0
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?
Windows 10
Bug Description
<img width="1196" alt="JASP independent t-test bug" src="https://github.com/user-attachments/assets/d053f4f6-2268-4
Feedback Frequency Netball Shooting Part A.zip
Screenshot and data attached.
I have a grouping variable with three groups. I want to do a comparision (classical independent t-test) between two of the groups. I have filtered the variable out using both the shown method and the filter function. When I move the grouping variable the message "Maximum number of levels is 2. Variable Group has 3 levels."
I have replicated the error with multiple data sets. I have saved and close the file and reopened the file and the error persists. Error applies to Bayesian independent t-test
Expected Behaviour
In previous versions of JASP.
Having filtered out 1 of the three groups the test would run a comparision between the remaining two groups.
Steps to Reproduce
- Open filter window for grouping variable
2.Deselect one of the three groups.
3.Open t-test menu and select Classical independent samples t-test - Move dependent variables to selection box
- Move Group to Grouping variable selection box
- Error message "Maximum number of levels is 2. Variable Group has 3 levels." appears
...
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.