JASP-data are essentially constant

irepet

Hi,

I am trying to run a repeated-measures ANOVA on a set of data with two independent factors.
When I try to run the analysis JASP returns the following message "data are essentially constant".
I understand that this is due to the fact that there is not much variation in the data. The problem is that I still need to run the analysis in order to get an output so that I can show that data really are essentially constant. I read that there is some way around this problem in other statistics software, I was wondering if this can be done in JASP as well.

By the way, if I run a regular ANOVA with two independet factors I get no error message. Why is that?

Thank you all for your help

EJ

Hi Irepet,

What appears to be the case is that every row (subject) shows an effect of about the same size, say like this:

1 200 300
2 700 800
3 400 500

If you drop the repeated measures aspect the results will have sufficient noise/variability. But I'm not 100% sure what you did. Do you have a screenshot of a jasp file (possibly with mock data) you could send? I suspect that something is just not correctly specified.

E.J.