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*
<span>The inverse image or preimage of a particular subset S of the codomain of a function is the set of all elements of the domain that map to the members of S. Image and inverse image may also be defined for general binary relations, not just functions.</span>
