set term gif
set xlabel "x"
set ylabel "Prob(N,x)"
set output 'binomial100.gif'
set title "Probability of choosing heads x times out of 100 trials"
plot "binomial100.txt" using 1:2 title "Prob(100,x)" with lines
set output 'binomial1000.gif'
set title "Probability of choosing heads x times out of 1000 trials"
plot "binomial1000.txt" using 1:2 title "Prob(1000,x)" with lines