Correlation between diagnostics and bias of the MK statistics. Each point in the plot represents a single simulation replicate with the value of bias of (left column) and(right column) indicated by the colour of the point. Results are shown for u=10−6 (top row) and u=10−5(bottom row), and each panel consists of 100 replicates from all combinations of recurrent sweeps with τ=103,104, s
=10−3,10−2and β=0.25,0.5,1,2. Simulations with bias outside the range of the colour scale were set at the extreme values and points with less than two medium frequency polymorphisms were excluded.