Figure 2

Distribution and mixture fit of observed correlations. Black curve: a crude empirical density smooth for the observed correlations, which correspond to the “rug” whiskers along the bottom. Brown bimodal curve: the mixture fit to the underlying “true” correlation distribution, marginalized over the mixture component. Pink and green dotted curves: the mixture components, multiplied by their probabilities. Pink: decoupled (“0”) or mismatched (“x”). Green: coupled and correctly mapped (“+”).