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.
Este ejercicio forma parte del curso
Customer Analytics and A/B Testing in Python
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Compute max_purchase_date
max_purchase_date = ____ - timedelta(days=____)