SELECT federal_state FROM table_name_3 WHERE representatives_of_national_average = "6"
CREATE TABLE table_name_3 (federal_state VARCHAR, representatives_of_national_average VARCHAR)
รัฐใดมีตัวแทน 6 คนตามค่าเฉลี่ยของประเทศ
Which federal state has 6 representatives of national average?