score = (x) -> 
  if x == "Yes"
    10
  else
    0
  
weights = [0.25, 0.25, 0.25, 0.25]
responsible_lobbying = [policy, political_contributions_policy, lobbying_expenditures, third_party_political_lobbying]

weights.reduce((weighted_sum, weight, index) -> 
              weighted_sum + weight*score(responsible_lobbying[index])
             , 0)