Name the average founded with joined less than 2008
CREATE TABLE table_name_88 (founded INTEGER, joined INTEGER)
SELECT AVG(founded) FROM table_name_88 WHERE joined < 2008
### Context: CREATE TABLE table_name_88 (founded INTEGER, joined INTEGER) ### Question: Name the average founded with joined less than 2008 ### Answer: SELECT AVG(founded) FROM table_name_88 WHERE joined < 2008