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Pitfall Detector

Check data work, whether done by people or by AI, for common pitfalls before you share it. Upload a chart, paste a written analysis, drop in a slide deck or analysis code, or bring every piece of an analysis at once, and get specific findings you can act on.

Avoiding Data Pitfalls book cover

Built on datapitfalls, the open-source detector based on Ben Jones’s Avoiding Data Pitfalls. Every finding cites a rule from its taxonomy of pitfalls across eight domains, with why it matters and how to avoid it.

Mistaking the data for reality: overgeneralizing from limited evidence, or treating numbers as more certain than they are.Mishandling the data itself: dropped rows, broken joins, mismatched keys, or inconsistent categories.Calculation slip-ups: mixing units, averaging rates without weighting, or aggregating across uneven periods.Comparison and inference errors: treating an average as typical, ignoring uncertainty, or over-reading small samples.Flawed analysis: extrapolating a trend too far, overfitting a model, or choosing a metric that flatters the story.Charts that mislead: truncated axes, the wrong chart type, cherry-picked windows, or missing context.Design choices that trip up the reader: colorblind-unsafe palettes, inconsistent colors, or unclear interactions.Who or what the data leaves out: unheard voices and missing groups that skew the whole picture.

Hover or tap a domain to see what it covers.

Pro subscription required

The Pitfall Detector is available to Pro subscribers.

Pro includes

  • • Every course in the library
  • • AI Coach for personalized guidance
  • • AI Tutor on every lesson
  • • Pitfall Detector in the Lab
  • • Badges and shareable verification

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