The antibiotics chart, or when the table beats the drawing
Anscombe's quartet showed that a drawing reveals what a table hides. Here is the reverse case: an award-winning antibiotics chart, gorgeous and unusable — that three columns of numbers finally make readable.
Read the article →The COVID dashboards, or why the simplest one won
Johns Hopkins had the prestige, the scientists and the media. Worldometer had ten times the visitors. A look back at the duel of the COVID dashboards — and what it teaches anyone who builds a report.
Read the article →Anscombe's quartet, or why your averages lie to you
Four datasets, identical statistics, four opposite realities. The visual proof that a summary number is never enough to decide.
Read the article →A business plan is a list of assumptions dressed up as a spreadsheet
Behind every number in a business plan hides a bet. How to extract those bets, phrase them so they can be tested — and track them over time the way you track a budget.
Read the article →On the art of analyzing data in Excel — or anywhere else
The fundamentals of any analysis project: start from a question, use the minimum data necessary, keep data separate from analysis. With a tool everyone already has.
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