Unnamed comments on 2012 Survey Results - Less Wrong

80 Post author: Yvain 07 December 2012 09:04PM

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Comment author: Kindly 29 November 2012 10:14:33PM 3 points [-]

Fishing for correlations is a statistically dubious practice, but also fun. Some interesting ones (none were very high, except e.g. Father Age and Mother Age):

  • IQ and Hours Writing have correlation 0.26 (75 degrees), which is the only interesting IQ correlation.
  • Siblings and Older siblings have correlation 0.48 (61 degrees), which isn't too surprising , but makes me wonder: do we expect this correlation to be 0.5 in general?
  • Most of the Big Five answers are slightly correlated (around +/-0.25, or 90+/-15 degrees) with each other, but not with anything else except the Autism Score. Shouldn't well-designed personality traits be orthogonal, ideally?
  • CFAR question 7 (guess of height of redwood) was negatively correlated with Height (-0.23, or 103 degrees). No notable correlation with the random number, though.
Comment author: Unnamed 09 December 2012 10:26:06PM 7 points [-]

CFAR question 7 (guess of height of redwood) was negatively correlated with Height (-0.23, or 103 degrees). No notable correlation with the random number, though.

I looked at this with the data set that I used for my CFAR analyses, and this correlation did not show up; r=-.02 (p=.58). On closer inspection, the correlation is present in the complete un-cleaned-up data set (r=-.21), but it is driven entirely by a single outlier who listed their own height as 13 cm and the height of the tallest redwood as 10,000 ft.

(In my analyses of the anchoring question I had excluded the data of 2 outliers who listed redwood heights of 10,000 ft. and 1 ft. Before running this correlation with Height, I checked the distribution and excluded everyone who listed a height under 100 cm, since those probably represent units confusions.)