I am new to the Data science and I was working on a dummy model for linear regression. There were more than 53 variable which are numeric in nature but data Data Dictionary stating these are Cat var.
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So I have created dummy Variables for the those var.
Now questions are.
- Should I create dummy Var for all the variables?
- If there is any missing Value in this Variable , what should be imputed ?
- Which Variable must be given in Factor Analysis Dummy Variables or original Variables?