How many decile has a roll less than 20?
CREATE TABLE table_name_6 (decile INTEGER, roll INTEGER)
SELECT AVG(decile) FROM table_name_6 WHERE roll < 20
### Context: CREATE TABLE table_name_6 (decile INTEGER, roll INTEGER) ### Question: How many decile has a roll less than 20? ### Answer: SELECT AVG(decile) FROM table_name_6 WHERE roll < 20