Spurious

beautifully meaningless correlations

Encyclopaedia Britannica print sets sold

correlates with

US probiotic dietary supplement sales

r = -0.97097% · 2005-2012
Encyclopaedia Britannica print sets soldUS probiotic dietary supplement sales

These two datasets have a 97% correlation over 2005-2012. Remember: correlation does not imply causation. But it does waggle its eyebrows suggestively.

spuriouscorrelation ≠ causation

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