Tom Brady's career records split by mascot type

brady_mascot_splits.rb

require 'csv'
require 'pp'

csv = <<-CSV
Cardinals,2,1,1,bird
Falcons,4,4,0,bird
Ravens,6,5,1,bird
Bills,26,23,3,human
Panthers,4,2,2,cat
Bears,4,4,0,"other animal"
Bengals,6,5,1,cat
Browns,6,5,1,human
Cowboys,3,3,0,human
Broncos,10,5,5,horse
Lions,5,4,1,cat
Packers,4,2,2,industry
Texans,5,4,1,human
Colts,12,9,3,horse
Jaguars,4,4,0,cat
Chiefs,6,4,2,human
Raiders,4,3,1,human
Dolphins,26,18,8,"other animal"
Vikings,4,4,0,human
Saints,4,3,1,"mythical being"
Giants,3,2,1,"mythical being"
Jets,26,20,6,industry
Eagles,3,3,0,bird
Steelers,7,5,2,industry
Chargers,7,5,2,industry
49ers,2,1,1,industry
Seahawks,2,1,1,bird
Rams,3,2,1,"other animal"
Buccaneers,3,3,0,human
Oilers,5,4,1,industry
Redskins,3,2,1,human
CSV

tallies = Hash.new([])
CSV.parse(csv) do |record|
  name, total, wins, losses, mascot = record
  tallies[mascot] = [(tallies[mascot][0] || 0) + wins.to_i, (tallies[mascot][1] || 0) + total.to_i]
end

results = tallies.inject({}) do |memo, record|
  memo[record[0]] = record[1][0].to_f / record[1][1].to_f
  memo
end

pp results.sort_by{|k,v| v}; nil

=> [["horse", 0.6363636363636364],
 ["mythical being", 0.7142857142857143],
 ["industry", 0.7254901960784313],
 ["other animal", 0.7272727272727273],
 ["cat", 0.7894736842105263],
 ["bird", 0.8235294117647058],
 ["human", 0.85]]