CREATE TABLE table_56842 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the attendance at Kardinia Park?
SELECT AVG("Crowd") FROM table_56842 WHERE "Venue" = 'kardinia park'
SELECT AVG("Crowd") FROM "table_56842" WHERE "Venue" = 'kardinia park'