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Spreadsheet disasters

February 13, 2023 By editor

Matt Parker describes what happens when spreadsheets go wrong in the BBC's "More or Less: Behind the Stats" podcast. I've been writing about this for over a decade and, sadly, little progress had been made. The cartoon is from xkcd, obviously. … [Read more...]

Filed Under: Data analysis Tagged With: data quality, spreadsheets

10 ways to mislead with data visualization

February 7, 2023 By editor

PolicyViz have published a useful article on errors you really need to avoid when creating data visualizations. … [Read more...]

Filed Under: Data analysis, Data science Tagged With: mistakes, visualization

Dutch giants

February 6, 2023 By editor

This chart crime made me afraid to visit Amsterdam. https://twitter.com/AdamSinger/status/1612124828114321410 I had to rework it to stop the nightmares. Phew. Everyone looks normal now. … [Read more...]

Filed Under: Data analysis, Data science Tagged With: visualization

Percentages or proportions?

February 2, 2023 By editor

Don't store percentages. Normalize them as proportions and format them as percentages for display. If you are representing 20%, record it as 0.2, regardless of how you present this to the user (for input or output). Having one approach keeps it simple. … [Read more...]

Filed Under: Data science Tagged With: percentages, proportions

Data storytelling

January 31, 2023 By editor

If you pay too much attention to social media these days, it appears that we're failing our clients if we don't present data as a narrative. Data storytelling is where it's at. Dataviz (data visualization) is so last year. This view does a disservice to both dataviz and data storytelling. It fails to appreciate the range of dataviz applications and, by watering down the definition of data … [Read more...]

Filed Under: Data science, General Tagged With: storytelling, visualization

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