Product Analytics. Part 2 Calculating D7 retention rate for a daily cohort

189. Calculating D7 retention rate for a daily cohort

In this exercise we need to calculate our first retention rate. More specifically, D7 retention rate for all mobile signups from the day of Feb 1, 2018. 📱 📆

💡 Consider a user retained if there’s any mobile event on the D7 day.

⚠ As usual, submit the integer part of the rate. For example, if the retention rate is 38.999% submit 38 as the answer.

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