[Bug]: ANOVA - low variance of dependent variable

[mspeiger]

JASP Version

0.19.1

Commit ID

No response

JASP Module

ANOVA

What analysis are you seeing the problem on?

ANOVA

What OS are you seeing the problem on?

Windows 10

Bug Description

I am trying to analyse my HRF data with an ANOVA in JASP. But apparently the values are too small for JASP to handle. When I run the ANOVA the following error occurs: residual sum of squares is 0; this might be due to extremely low variance of your dependent variable

However, when i conduct the same analyses in R it works..

Of course the values of the HRF data are really small:

Mean = -2,53E-08

Std. Deviation = 7,65E-07

Minimum = -1,44E-05

Maximum = 1,05E-05

So I am wondering if there is a way to change the sensitivity of JASP in the settings, so that it works without transforming my data?

Thank you very much in advance for your help here.

Expected Behaviour

Calculating the ANOVA

Steps to Reproduce

insert very small values and run an ANOVA, unfortunately due to data protection i am not able to share my data set to reproduce the error.

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]

@mspeiger, thanks for taking the time to create this issue. If possible (and applicable), please upload to the issue website (#3305, 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

[mspeiger]

[JohnnyDoorn]

HI @mspeiger ,

Could you please send me the data that is causing the error? I have a test data set with extremely low variance but that one seems to work. You can send it to j.b.vandoorn@uva.nl.

Kind regards,
Johnny

[mspeiger]

Hi Johnny, Thank you very much for reaching out and following up on this issue. I attached our anonymised data sheet as well as a screenshot showing which variables we want to assign. Also, maybe relevant: I think it is not specific to my data set, but more to the size of the values, as a colleague of mine tried to analyse her NIRS data set (different data but approximately the same size of values) and she got the same error. Thank you and let me know if I can provide anything else Best, Marie

…

----- Ursprüngliche Mail -----

Von: "Johnny van Doorn" ***@***.***> An: "jasp-stats/jasp-issues" ***@***.***> CC: "Marie-Luise Speiger" ***@***.***>, "Mention" ***@***.***> Gesendet: Dienstag, 18. März 2025 10:20:23 Betreff: Re: [jasp-stats/jasp-issues] [Bug]: ANOVA - low variance of dependent variable (Issue #3305) JohnnyDoorn left a comment (jasp-stats/jasp-issues#3305) HI @mspeiger , Could you please send me the data that is causing the error? I have a test data set with extremely low variance but that one seems to work. You can send it to ***@***.*** Kind regards, Johnny -- Reply to this email directly or view it on GitHub: #3305 (comment) You are receiving this because you were mentioned. Message ID: ***@***.***>

-- Marie Luise Speiger PhD Student Independent Research Group 'Milestones of Early Cognitive Development' Max Planck Institute for Human Cognitive and Brain Sciences Phone: +49-341 9940-2640 Email: ***@***.***