What's the mean week number for November 12, 1978?
CREATE TABLE table_name_9 (week INTEGER, date VARCHAR)
SELECT AVG(week) FROM table_name_9 WHERE date = "november 12, 1978"
### Context: CREATE TABLE table_name_9 (week INTEGER, date VARCHAR) ### Question: What's the mean week number for November 12, 1978? ### Answer: SELECT AVG(week) FROM table_name_9 WHERE date = "november 12, 1978"