Institute of Evolutionary Biology and Environmental Studies, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
Science. 2011 Sep 2;333(6047):1221. doi: 10.1126/science.1200996.
Tomkins et al. (Reports, 14 May 2010, p. 892) reported a strong negative correlation between breeding values and mutational load in cow-pea weevils. Here, I show that this result can be attributed to a statistical artifact. By testing the observed correlation against an incorrect null hypothesis, they find a negative correlation where one does not exist.
汤普金斯等人（报告，2010 年 5 月 14 日，第 892 页）报道了在豇豆象中繁殖值与突变负荷之间存在很强的负相关性。在这里，我表明这个结果可以归因于一个统计假象。通过对观察到的相关性与一个错误的零假设进行检验，他们发现了一个实际上并不存在的负相关。
