Hello Anna,
For randomise you can safely ignore these warnings - it is due to the fact that we are using the groups column as a convenient way to define exchangeability-blocks
> Dear Mark,
>
> thank you for your response and updating the user guide. The screenshots are very helpful. I have one more question. I changed my design matrix according to your hints and got following warning message in Glm GUI:
>
> Problem with processing the model: Warning - design matrix uses different groups (for different variances), but these do not contain "separable" EVs for the different groups (it is necessary, that, for each EV, only one of the groups has non-zero values).
>
> Is it normal for paired t-test to get this warning message?
>
> Thanks in advance for your help.
> Best,
> Anna
>
|