Comment by Sprint

I'd just use octave. It's as simple as

  $ octave
  octave:1> a=load('numbers.txt');  
  octave:2> sum(a)
  ans =  55
  octave:3> mean(a)
  ans =  5.5000
  octave:4> std(a)
  ans =  3.0277
  octave:5> quantile(a)
  ans =
  
      1.0000
      3.0000
      5.5000
      8.0000
     10.0000

etc