Gnuplot Produced by GNUPLOT 5.3 patchlevel 0 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 new/new-with-payload: Welch t test t distribution t distribution t statistic t statistic