CREATE TABLE table_33683 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the average crowd for Carlton?
SELECT AVG("Crowd") FROM table_33683 WHERE "Away team" = 'carlton'
SELECT AVG("Crowd") FROM "table_33683" WHERE "Away team" = 'carlton'