ruby-descriptive-statistics-sample.rb

gistfile1.txt

#!/usr/bin/env ruby

require "rubygems"
require 'descriptive_statistics'

arr = []

ARGF.each_with_index do |line, idx|
  # print ARGF.filename, ":", idx, ";", line
  arr << line.to_i if line.to_i > 0
end

puts "Statistics"
puts "    Minimum: #{arr.min}"
puts "    Maximum: #{arr.max}"
puts "    Mean: #{arr.mean}"
puts "    Standard Deviation: #{arr.standard_deviation}"
puts "    Percentile 25: #{arr.percentile 25}"
puts "    Percentile 75: #{arr.percentile 75}"
puts "    Percentile 90: #{arr.percentile 90}"
puts "    Percentile 95: #{arr.percentile 95}"