CREATE TABLE table_37754 ("Call sign" CLOB, "Frequency MHz" FLOAT, "City of license" CLOB, "ERP W" FLOAT, "Class" CLOB, "FCC info" CLOB)

What is the average ERP W for callsign K207BK?
SELECT AVG("ERP W") FROM table_37754 WHERE "Call sign" = 'k207bk'
SELECT AVG("ERP W") FROM "table_37754" WHERE "Call sign" = 'k207bk'