Okay so median is the number in the middle and mean is when you add them all up and divide by how many numbers there are
20,28,35,40,132
So 35 is the median
and the mean is 20 + 28 + 35 + 132 + 40 = 255 / 5 = 51
the mean is a better way to represent the data because it does not just pick a number from the set of numbers it calculates the average
