Hello!
The median is the number in the middle when the data is ordered from least to greatest
Order the numbers first
1, 2, 3, 3, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 11
From here when find the medians which are two 6's which means the median is 6
Hope this helps!