How analysts calculate retention incorrectly скачать в хорошем качестве

How analysts calculate retention incorrectly

📌 Topic: Why Most Analysts Calculate Retention Wrong in SQL Retention is not just COUNT(DISTINCT user_id). It’s a cohort-based analysis over time. Most retention mistakes don’t come from SQL syntax — they come from incorrect analytical logic. In this video, you’ll learn: Why many analysts calculate retention incorrectly How to properly define cohorts based on signup date How to measure user activity week by week How to build a correct cohort retention table in SQL Who is this for? Junior, Middle, and Senior data analysts Product analysts Business analysts Anyone who wants to improve analytical thinking in SQL 📂 Dataset & SQL repository: https://github.com/NMildred/practical-sql/ Key takeaway: Retention is about users returning relative to the moment they entered the product — not just the number of unique users who performed an event. 🔥 Don’t forget to subscribe! Subscribe to the channel for more practical SQL and data analytics tutorials.