Final Score Computation

  def score
        pass = 0
        pass_or_fail = 0
        results.each do |result|
            if result.status == "1" || result.status == "0"
                pass_or_fail += 1
                pass += 1 if result.status == "1"
            end
        end
        score = ((pass.to_f * 5) / pass_or_fail.to_f).to_f

        # Get decimal part
        integer_part = score.to_i
        decimal_part = score - integer_part

        if score % 1 == 0
            decimal_part = 0
        else 
            if decimal_part <= 0.5
                decimal_part = 0.5
            else
                decimal_part = 1
            end    
        end
        integer_part + decimal_part
    end