Figure 2

Comparison between self-reported ancestry and structured estimated ancestry proportion. Ideally without admixture, each group would be represented by just one bar. That is if the vector Q = (q₁,q₂,q₃,q₄) represents the ancestry score for each individual in the dataset, Q should have 3 of its components equal to 0 and one component equal to 1. As can be seen from this figure, this is not the case. Self-reported ancestry is again less reliable for the Hispanic-American population since its graph seems to be the farthest away from the ideal situation.