Instruction
Good job! One more question to go.
Exercise
Create a customer retention chart in weekly signup cohorts. It should have the following columns:
YearWeekPercentActive10d(the percentage of customers still active 10 days after their registration)PercentActive30d(the percentage of customers still active 30 days after their registration)PercentActive60d(the percentage of customers still active 60 days after their registration)
Order the results by year and week.
Stuck? Here's a hint!




