Lies, Damn Lies, and Data Visualisation

or, The Unexpected Virtue of Innumeracy

Callum Ballard
Towards Data Science
4 min readJun 11, 2019

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The 3D stacked pie chart shows 8 statistics simultaneously, and none of them effectively

As an analyst or data scientist, it might feel like creating insight from a million-row dataframe is the hard part of the process.

You spend hours scrubbing null-values, transforming data, testing hypotheses, recording R²s, and scrutinising p-values. At some point, you reach a conclusion. You sit back…

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Analytics Lead at Cleo AI, McKinsey & LSE Alumni, previously published in The Economist. Typically found listening to Japanese Math Rock...