CREATE TABLE table_77231 ("Round" FLOAT, "Pick" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

What is the average number of rounds for billy hicks who had an overall pick number bigger than 310?
SELECT AVG("Round") FROM table_77231 WHERE "Overall" > '310' AND "Name" = 'billy hicks'
SELECT AVG("Round") FROM "table_77231" WHERE "Name" = 'billy hicks' AND "Overall" > '310'