2 posts tagged with selectionbias.
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"P-hacking is widespread."

P-hacking, or inflation bias, is the selective inclusion of experimental results that suggest statistical significance, as well as the selective exclusion of results which argue against the hypothesis. Skewing work towards positive results helps investigators publish in high-profile journals, which in turn improves access to funding. In a recent PLOS publication, Michael Jennions and Megan Head use text-mining and meta-analyses to determine the extent to which this influences a broad array of published research, offering recommendations on how to reduce this practice.
posted by a lungful of dragon on Mar 17, 2015 - 7 comments

The Department Of War Math

You Are Not So Smart: Survivorship Bias, demonstrated through Abraham Wald's work at the Statistical Research Group in World War 2. [more inside]
posted by the man of twists and turns on Jun 6, 2013 - 48 comments

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