The median is the middle number of an ordered distribution. If there are two numbers at the middle, add the
two numbers and divide the sum by 2.
The distribution is not ordered and so order it first.
12, 19, 24, 39, 45, 51, 54, 67, 75, 81
There are two numbers at the middle, 45 and 51
Median = Median = Median =48