In our set above the median is 30. Compare the mean and the median of a data set that has a symmetrical. What is median or what is mode.
The median is the middle point of a number set in which half the numbers are above the median and half are below.
If there are an even number of values in the data set the median is the arithmetic mean of the two middle numbers. There are two major types of statistical distributions. Thus the median separates the lower and higher half of a data set. If there are an even number of values in the data set the median is the arithmetic mean of the two middle numbers.