Gnuplot Produced by GNUPLOT 5.2 patchlevel 6 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 -10 -8 -6 -4 -2 0 2 4 6 Density t score read/one entity/1000 entries: Welch t test t distribution t distribution t statistic t statistic