Lightning Lessons

Don't Take Numbers at Face Value: Bad Data Ruins Good Charts

Hosted by Enrico Bertini

Tue, Oct 14, 2025

4:00 PM UTC (1 hour)

Virtual (Zoom)

Free to join

60 students

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Think Effectively with Data Visualization
Enrico Bertini
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What you'll learn

How to inspect and debug your data

How to think about the validity of your data

How bad data ruins your charts

Why this topic matters

There is no amount of charting skills that can salvage you from problems in the data. When creating charts, you must first conduct thorough research to understand the validity of your data. In this webinar, I'll describe my personal framework for thinking about data validity and how it relates to the messages you intend to communicate with your charts.

You'll learn from

Enrico Bertini

University professor, researcher, educator.

I have taught and conducted research in data visualization and visual analytics for 15+ years. I have taught public large-scale courses on the web for many years. I was the cohost of the popular Data Stories podcast. Now, I write a successful Substack data visualization newsletter called FILWD.

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