~4 min by voice
This checks whether the candidate understands that retention is calculated by cohort as the share of the cohort that returned on a specific day, and whether they can correctly define activity, the numerator and the denominator, and compute it in SQL.
The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.
Sign in to answerBest with headphones · ~4 min