Find the median.
2, 20, 19, 15, 11, 9, 7, 1
1,2,7,9,11,15,19,20
9+11=20
20/2
2, 20, 19, 15, 11, 9, 7, 1
1,2,7,9,11,15,19,20
9+11=20
20/2