SELECT T2.balance FROM accounts AS T1 JOIN checking AS T2 ON T1.custid  =  T2.custid WHERE T1.name IN (SELECT T1.name FROM accounts AS T1 JOIN savings AS T2 ON T1.custid  =  T2.custid WHERE T2.balance  >  (SELECT avg(balance) FROM savings))
Find the checking balance of the accounts whose savings balance is higher than the average savings balance.
[Schema (values) (types)]: | small_bank_1 |  ACCOUNTS : custid (text) , name (number) | SAVINGS : custid (text) , balance (number) | CHECKING : custid (text) , balance (number);