CREATE TABLE table_10709 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the crowd size when Geelong played at home?
SELECT AVG("Crowd") FROM table_10709 WHERE "Home team" = 'geelong'
SELECT AVG("Crowd") FROM "table_10709" WHERE "Home team" = 'geelong'