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While working on model building using Logistic Regression, we did two different ways.

  • Method 1: Created dummy variables before treating missing values. This resulted in 37 columns expanding to 192 columns.
  • Method 2: Treated missing values first followed by dummy variable creation. This resulted in 119 columns.

Which one is preferred and why?

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  • $\begingroup$ No easy answer, whatever works best for your end objective. $\endgroup$ Apr 9 at 12:44

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