Question $22($Mandatory$)(4$ points$)$

You are leading the Data Analytics team in Telcom firm $($e$.$g$.$ AT&T$).$ You were asked to develop a model that can predict how many customers are going to churn this year because a new price increase to the plans. You have decided to use Classification Tree to model this behavior.

a$.$ There is an argument in the team regarding the most important independent variable $($age$,$ sex, income, usage etc.$).$ What will you ask your team to do$?$ Please use bullet points to answer.

b$.$ One of the team members convinced you to use Logistic Regression instead of Classification Tree. What argument did the team member use to change your mind? Please use bullet points to answer.