anonym comments on Survey Results - Less Wrong

48 Post author: Yvain 12 May 2009 10:09PM

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Comment author: Z_M_Davis 14 May 2009 07:03:58PM *  4 points [-]

IQs (warning: self-reported numbers for notoriously hard-to-measure statistic)

Yeah, I'm extremely skeptical of the IQ data. Assuming a standard mean=100 SD=15 test (although at least one respondent says he took a test with SD=24), our reputed median is above the 0.003th percentile. I don't think any public blog is that elite.

ERRATUM: Oh, dear. I meant 99.7th percentile.

Comment author: anonym 17 May 2009 01:06:32AM 4 points [-]

If we were to assume a test with a standard deviation of 24, a median of 141.5 would be just below the 96th percentile. That still seems too high for the median user, but it's almost plausible -- much more so than 99.7th percentile.

It's also quite likely that LW readers with abnormally high IQs (relative to LW) are (A) much more likely to have been tested and to know (and remember) the result, and (B) include the score on the survey.