What number can I include to get the median of 10 in this data set: 14,6,9,17,11?
6, 9, 11, 14, 17 ... 11 is currently the median (middle value)
adding a number ≤ 9 will make the two middle values 9 and 11
... the median is their average ... 10
adding a number ≤ 9 will make the two middle values 9 and 11
... the median is their average ... 10