Fundamentals of Data Analysis Counting in ranges: user age

44. Counting in ranges: user age

We’ve already talked about how important it is to know your audience, their demographics, interests, etc.

In this exercise let’s calculate the percentage of adult users of Bindle in the USA.


  1. For simplicity let’s use integer numbers for calculating the percentage. Example: if the answer is 39.98 type 39 as an answer).
  2. Let’s consider adults users who have age 21 or higher
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Anatoli Makarevich, author of SQL Habit About SQL Habit

Hi, it’s Anatoli, the author of SQL Habit. 👋

SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst 📊 and solve real-life challenges from Business, Marketing, and Product Management.

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-- Type in your query here. You might want to start by listing all records: SELECT * FROM users
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