query: SELECT avg(acc_bal) ,  acc_type FROM customer WHERE credit_score  <  50 GROUP BY acc_type
question: For each accounts types, do find that average accounts balances of customer with credits score more lower as 50.
query_toks: SELECT avg ( acc_bal ) , acc_type FROM customer WHERE credit_score < 50 GROUP BY acc_type
query_toks_no_value: select avg ( acc_bal ) , acc_type from customer where credit_score < value group by acc_type
question_toks: For each accounts types, do find that average accounts balances of customer with credits score more lower as 50.