Phillips Patrick C
Department of Biology, Box 19498, University of Texas at Arlington, Arlington, Texas, 76019-0498.
Evolution. 1998 Feb;52(1):251-255. doi: 10.1111/j.1558-5646.1998.tb05158.x.
Studies investigating correlations among traits are increasingly common in evolutionary biology. By providing power calculations, minimum sample sizes, and standard errors of correlation coefficients in a variety of contexts, this note provides guidelines to insure that nonzero correlations will not be erroneously dismissed as nonsignificant in properly designed experiements. Forty individuals is often sufficient for reasonable estimation of correlation coefficients, although 100 or more individuals may be nexessary if a large number of traits are involved or comparisons are to be made among the coefficients.
在进化生物学中，研究性状之间相关性的研究越来越普遍。通过提供各种情况下的功效计算、最小样本量和相关系数的标准误差，本说明提供了指导方针，以确保在设计合理的实验中，非零相关性不会被错误地判定为不显著。对于合理估计相关系数而言，40个个体通常就足够了，不过如果涉及大量性状或要对系数进行比较，可能需要100个或更多个体。
