Hello! I am using the PROC REG to perform a stepwise selection to come up with a regression model. I have 56 potential regressors and I want a model with a combination of three of these regressors. How can I set the number of independent variables to 3? I tried using the stop= option, but I don't know if it is correct or whether there is another way to do it: Proc reg data= input outest= PAR tableout rsquare ; model target = ®. / selection= stepwise stop=3 sle=0.05 sls=0.05 noint ; output out=stima predicted= predict; Run; Can you help me? Thank you!
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