Not a sinister plot

1 2 
2 2
3 0
4 3
5 4
6 0
7 0
8 0
9 0
10 6
11 0
12 6
13 0
14 0
15 0
16 0
17 0
18 0
19 7

The data is the file exercise.dat and I used gnuplot with just the command:

plot "exercise.dat"

Here is a link if you want to learn more about gnuplot.

http://t16web.lanl.gov/Kawano/gnuplot/datafile-e.html#2dim

plot "exercise.dat" with lines.

Pretty easy to learn and use so it gets added to my repertoire now.