Does anyone know what I have done wrong = error message PROCESS v 4.2 moderation analysis with categorical moderator... 'one of the categories contains only a single case?'
The moderation variable is categorical with 4 values... I have run this analysis before and it worked perfectly... where have I made my mistake please?
Rainer Duesing
Did you code the grouping variable wrongly? It says that one group has a sample size of N = 1. If it worked before, I would guess that you recoded something, maybe by accident. Check your raw data, for example: get the frequencies of every category in your grouping variable. Does that correspond to the sample sizes for each category that you gathered?
Otherwise show your data here on RG.
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