Answer:
12
Step-by-step explanation:
9, 10, 4, 12, 15, 17, 18, 10, 12, 13
Putting the numbers from smallest to largest
4,9, 10, 10, 12 12, 13, 15, 17, 18,
The median is the middle number
There are 10 numbers
4,9, 10, 10, 12 12, 13, 15, 17, 18,
The middle number is between the 12's, so it is 12
