Given: 18 27 24 22 29 21 23 25 25 31 19 21
The median is the middle number of the numbers given.
Lets arrange the numbers from smallet to largest:
18 19 21 27 21 22 23 24 25 25 29 31
From there we find the middle number by crossing out the numbers on both ends:
18 19 21 21 22 23 24 25 25 27 29 31
As you can see the number in the middle are 23 and 24 but we need one so we just find the number between 23 and 24 which is 23.5
Answer: Median is 23.5
