Question

How do you select important variables while working on a data set?

Answer 1

There are various means to select important variables from a data set that include the following:

• Identify and discard correlated variables before finalizing on important variables
• The variables could be selected based on ‘p’ values from Linear Regression
• Forward, Backward, and Stepwise selection
• Lasso Regression
• Random Forest and plot variable chart
• Top features can be selected based on information gain for the available set of features.