Exercise

Engineering a new column

Leveraging domain knowledge to engineer new features is an essential part of modeling. This quote from Andrew Ng summarizes the importance of feature engineering:

Coming up with features is difficult, time-consuming, requires expert knowledge. "Applied machine learning" is basically feature engineering.

Your job in this exercise is to create a new feature that contains information about the average length of night calls made by customers.

Instructions

100 XP

Create a new feature - 'Avg_Night_Calls' - that is the result of dividing 'Night_Mins by 'Night_Calls'.
Print the first five rows of this new feature.