CREATE TABLE table_33773 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

What is the average crowd size when the home team is North Melbourne?
SELECT AVG("Crowd") FROM table_33773 WHERE "Home team" = 'north melbourne'
SELECT AVG("Crowd") FROM "table_33773" WHERE "Home team" = 'north melbourne'