SELECT avg(student_capacity) ,  sum(student_capacity) FROM dorm WHERE gender  =  'X'
SELECT avg(student_capacity) ,  sum(student_capacity) FROM dorm WHERE gender  =  'X' <table_name> : Dorm col : dormid | dorm_name | student_capacity | gender row 1 : 100 | Smith Hall | 85 | X row 2 : 110 | Bud Jones Hall | 116 | M row 3 : 140 | Fawlty Towers | 355 | X row 4 : 160 | Dorm-plex 2000 | 400 | X row 5 : 109 | Anonymous Donor Hall | 128 | F row 6 : 117 | University Hovels | 40 | X row 7 : 104 | Grad Student Asylum | 256 | X
col : avg(student_capacity) | sum(student_capacity) row 1 : 227.2 | 1136