What was the median number of items purchased? Show your work

Answer:
4
Step-by-step explanation:
Step 1: Arrange the numbers in ascending order
1,2,2,3,3,3,3,5,5,7,7,9,9,10
Step 2: Find the two middle numbers, m1 and m2
3, and 5
Step 3: Find the average of m1 and m2
(3+5)/2 = 4
(m1 + m2)/2. Where, m1 and m2 are the two middle numbers.
median is 4