Find the median of the given data
9,3,7,2,5,4

Solution:

​​​​​​First, arrange the numbers in ascending or descending order. 
Here, let's take in ascending order:   2, 3, 4, 5, 7, 9

The total number of terms is 6, which is even.
Therefore, there are two numbers in the middle, which are at (6/2)^th and (6/2  +1)^th positions.
That is at the 3^rd and 4^th positions which are 4 and 5.
                                                                                                                                                               
If the number of terms is even, the median is the mean of the two middle numbers.

Median =   4 + 5        
                    2
             =    9 
                   2
            =   4.5