CREATE TABLE table_48108 ("Rank" FLOAT, "Title" TEXT, "Studio" TEXT, "Director" TEXT, "Worldwide Gross" TEXT)

What is the average rank for the film directed by michael bay?
SELECT AVG("Rank") FROM table_48108 WHERE "Director" = 'michael bay'
SELECT AVG("Rank") FROM "table_48108" WHERE "Director" = 'michael bay'