Median

Median refers to the value which lies in the middle of the data when data is arranged in an increasing or decreasing order. Half of the observations lie above the median and the other half below it.
To calculate the median, the data is first arranged in an ascending or descending order. Then the middle value is observed.
For eg; 2, 4, 6, 8, 9
6 is the median in this case since it lies in the middle. There are two observations above and below 6.
In case of odd number of observation, the value of median is one of the observations in the existing data.
In case of odd number of observation, the value of median is one of the observations in the existing data.
In case of even number of observations, the value of median is not one of the observations in the existing data.