138. Validation of signup events consistency

There’s one thing we need to remember when working with web analytics. Pageviews and events are sent via the browser over the network, via chunks of JavaScript code. There are many things that can go wrong – network is off (not a surprise for mobile users), there’s an error in some other part of our JavaScript and events are simply not sent out.

That lesson ☝ teaches us the importance of data validation. There’s a saying among data analysts: “S**t in – S**t out”. It means that if the data is inconsistent and noisy all this inconsistency will be...

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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.

SQL Habit course is made of bite-sized lessons (you’re looking at one atm) and exercises. They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 🚀

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