Law of the Day | 1202
6. Regression to the mean can mislead
Extreme patterns in data are likely to be, at least in part, anomalies attributable to chance or error. The next count is likely to be less extreme. For example, if speed cameras are placed where there has been a spate of accidents, any reduction in the accident rate cannot be attributed to the camera; a reduction would probably have happened anyway.
[x]#11335 fan maandag 2 december 2013 @ 11:11:48
