Grouping traits (S, FF, and SFF) for species divided by Dispersal regime (Male-biased, Female-biased, or Bi-sexual) versus (A) the relative CV in Group size and (B) the relative variance in sex ratio.

<p>For longitudinal studies, the relative CV in group sizes were calculated as the residuals of a regression of CV in group size against the log₁₀ maximum number of samples per group (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0114099#pone-0114099-g002" target="_blank">Figure 2</a>), where the intercepts were allowed to differ. Similarly, for cross-sectional studies the mean CV in group size was subtracted from the CVs from each study. The residuals for all three types of studies (longitudinal group, longitudinal population, and cross-sectional) were then standardized to have a variance of one. This standardization makes the variation in CVs in group size the same for all three types of study. The analysis of variance in sex ratio (after arcsine-square-root transformation) was performed similarly to make the variation within the three types of studies the same.