CREATE TABLE table_name_96 (points INT, class VARCHAR, wins VARCHAR)

What is the average number of points for a team in the 250cc class with fewer than 0 wins?
SELECT AVG(points) FROM table_name_96 WHERE class = "250cc" AND wins < 0
SELECT AVG("points") FROM "table_name_96" WHERE "250cc" = "class" AND "wins" < 0