Stack the calls!

New week, new project! One of your clients, a telecommunication company, wants to know why its customers are leaving. You will perform an analysis to figure it out. First, you explored the dataset churn and realized some information is missing. The dataset contains data about the total number of calls and the minutes spent on the phone by different customers. However, the state and city they live in are not listed.

You predefined an array with that data. You'd like to add it as an index in your DataFrame.

The DataFrame churn is available for you. It contains data about area code, total_day_calls and total_day_minutes. Make sure to examine it in the console!

Create a new multi-level index using the new_index list and the appropriate pandas method. Name the levels state and city respectively.

Exercise

Stack the calls!

Instructions 1/3