Beware the spurious correlation…

August 7, 2011

Nice explanation of why you need stratification and how it works.

http://www.guardian.co.uk/commentisfree/2011/aug/05/bad-science-adjusting-figures

More generally, nice illustration of why, if you’re operating below a certain level of sophistication, you effectively just can’t  think about certain topics.   You’re out of your depth.

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