Answer:
13.5
Step-by-step explanation:
median is the value of the centre one when a set of a number is arranged in ascending or descending order.
firstly, arrange the number
3,4,9,10,12,15,17,27,47,48
then, cancel a number from the end of right and left sight, one after another, until it reaches the centre. for example, cancel no 3 with no 48 since it is a pair from the end of left and end of right. continue with cancelling no 4 and 47.
as a result, you"ll get 12 and 15 as the median. you just have to add both of the numbers and multiply by 2.