# set terminal pngcairo  background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'smooth.2.png'
set boxwidth 0.05 absolute
set key inside left top vertical Right noreverse enhanced autotitles nobox
set xzeroaxis linetype 0 linewidth 1.000
set yzeroaxis linetype 0 linewidth 1.000
set zzeroaxis linetype 0 linewidth 1.000
set title "Normal Distribution" 
bin(x, s) = s*int(x/s)
GPFUN_bin = "bin(x, s) = s*int(x/s)"
plot "random-points" u 2:(0.25*rand(0)-.35) t '',      "" u (bin($2,0.05)):(20/300.) smooth freq t 'smooth frequency' w boxes,      "" u 2:(1/300.) smooth cumulative t 'smooth cumulative'