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.
Questo esercizio fa parte del corso
Customer Analytics and A/B Testing in Python
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Compute max_purchase_date
max_purchase_date = ____ - timedelta(days=____)