Exercise

Counting nodes and computing connectance

In this exercise, you will count the number of each type of node using the customers dataframe. The churn column has two different values:

0 for non-churners
1 for churners

You will also compute the network's connectance using the formula $p=\frac{2E}{N(N-1)}$ where $N$ is the number of nodes and $E$ the number of edges in the network.

Instructions

100 XP

Count the number of churn nodes by conditioning on customers$churn.
Count the number of non-churn nodes by conditioning on customers$churn.
Count the total number of nodes and name the variable nodes.
Compute the network's connectance using the formula for $p$ shown above. You can use edges from the previous exercise.

Take Hint (-30 XP)