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I thank you for your workflow, but I have buildt them on my own. Nevertheless I will take a close look at your solution,
as one can allways learn something new. :-)
However; The question is still there :
how it is implemented in Alteryx, as it looks like certain tools do this to some extend automatically?
More precise: (although the following is simplyfied)
"By accicdent" I pluged in some categorical data into the linear regression tool and the output suggests that
the different entries in the categorical columns were identified and transformed.
To keep it simple: One column of categorical were handled quite well, but one column of categorical was "ignored".
As I do not know how this was done, I can only do some guesses (hence I created this thread).
One reason could be : The good column contains only a few number of different categoricals, where the bad column contains lots of different. Hence any statistic we apply is more resonable for the "good" column.