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This is a fascinating example of Simpson's Paradox: https://en.wikipedia.org/wiki/Simpson%27s_paradox https://en.wikipedia.org/wiki/Simpson%27s_paradox It als
by jonahx 11y ago
This is a fascinating example of Simpson's Paradox:
https://en.wikipedia.org/wiki/Simpson%27s_paradox https://en.wikipedia.org/wiki/Simpson%27s_paradox
It also reminds me of the phenomenon, in customer service, whereby an increase in complaints can sometimes indicate success -- it means the product has gone from bad enough to be unnoticeable to good enough to be engaged with.
- jfoutz 11y agoIn WW1, helmets were introduced to protect soldiers. Surprisingly the frequency of head wounds went way up. It took a little while to realize soldiers were "just" being wounded, rather than outright killed if they had no helmet.
- BostonEnginerd 11y agoThere's a similar story about putting armor on planes during WWII - http://www.johndcook.com/blog/2008/01/21/selection-bias-and-bombers/ http://www.johndcook.com/blog/2008/01/21/selection-bias-and-...