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 -5 -4 -3 -2 -1 0 1 2 3 4 5 Density t score read/one entity/100 entries: Welch t test t distribution t distribution t statistic t statistic