CREATE TABLE table_68039 ("Name" CLOB, "Years" CLOB, "Gender" CLOB, "Area" CLOB, "Authority" CLOB, "Decile" FLOAT)

Name the average decile for state authority and area of fernridge
SELECT AVG("Decile") FROM table_68039 WHERE "Authority" = 'state' AND "Area" = 'fernridge'
SELECT AVG("Decile") FROM "table_68039" WHERE "Area" = 'fernridge' AND "Authority" = 'state'