Hello!
So first off, let's define what a median is: in the list of answers (listed from least to greatest) the number i the middle is the median.
Just like I said, line up the numbers in order of smallest to largest:
12, 14, 14, 14, 15, 16, 16, 18, 18, 19, 21, 22
Now find the number in the middle. It should be 16.
*Just a note for the future: when there's an odd number of integers, the median will just be that number in the middle. Example: 1,4,5; 4 is the median. Now, if there are an even number of integers, the median will be the average between the two middle numbers. Example: 1,4,5,7; the two numbers in the middle are 4 and 5. Take the average between the two (4+5)/2 and you would get 4.5*