score = (x) -> 
  if x == "Yes"
    10
  else
    0
  
weights = [0.5, 0.5]
collective_bargaining_fundamentals = [collective_bargaining, collecting_bargaining_in_business_relationships]

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