2. • The second measure of central
tendencies
• It is the middle most item in the set
of data or scores
• The goal of the median is to locate
the midpoint of the distribution.
3. Step 1. Array the data set in either ascending or descending
order.
Step 2. Find the number of terms in the given set of data. It is
denoted by n.
Formula:
X=(n+1)th
2
X= median
N= number of data involved
th= th term
4. Note! If n is odd, the median is the middle term of the
array.
If n is even, then the median is the average of two middle
items.
Example: Odd number of items
56,35,12,20,14,28,15
12,14,15,20,28,35,56
Example: Even number of items
33,19,35,26,50,19
19,19,26,33,35,50
5. L= exact lower limit of the median class
N= number of scores or data involved
cf<= cumulative frequency of the class immediately
receiving the median class
fm= cumulative frequency of the median class
i =interval
