denoting or relating to a value or quantity lying at the midpoint of a frequency distribution of observed values or quantities, such that there is an equal probability of falling above or below it.
Put them in order, ( 70, 71, 72, 72 ,77)
There is an odd number of numbers so the median is the middle.
(70,71,72,72,77)
72 is in the median to the number list.