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closeLeverage
Posted by rafaerts on 11 Jun 2009 at 14:42 GMT
We found a significant positive relationship between perturbation magnitude and recovery time for variables that had fully recovered (Regression, r2 = 0.22, p<0.05, d.f. = 1, F = 6.3; Fig. 5). However, the significance was entirely determined by one strongly outlying point
http://plosone.org/article/info:doi/10.1371/journal.pone.0005653#article1.body1.sec4.p1
The authors realized that the single outlier has such a tremendous leverage effect, and therefore it would have been better to have omitted this point, or to have omitted the whole regression.
RE: Leverage
camille_couralet replied to rafaerts on 16 Jun 2009 at 15:30 GMT
Hi Raf,
yes I was also surprised and do not understand either. The figure is much less informative with this outliar.
Nice article though, the realistic and non-catastrophic viewpoint is very much appreciable.