Exercise

Calculating KPIs

You're now going to take what you've learned and work through calculating a KPI yourself. Specifically, you'll calculate the average amount paid per purchase within a user's first 28 days using the purchase_data DataFrame from before.

This KPI can provide a sense of the popularity of different in-app purchase price points to users within their first month.

Instructions 1/4

XP

1
2
3
4

Subtract timedelta(days=28) from current_date to find the last date that we will count purchases from. The current_date variable has already been defined.

Take Hint (-7 XP)