SELECT avg(room_count) FROM Apartments WHERE apt_type_code  =  "Studio"
Find the average room count of the apartments that have the "Studio" type code.
SELECT avg ( room_count ) FROM Apartments WHERE apt_type_code = `` Studio ''
select avg ( room_count ) from apartments where apt_type_code = value
Find the average room count of the apartments that have the `` Studio '' type code .