20, 19, 13, 23, 16, 15, 17, 17, 15, 15, 22, 19
To find the Median, place the numbers in value order
and find the middle
.
13, 15, 15, 15, 16, 17, 17, 19, 19, 20, 22, 23
There are 12 numbers and so we don't have just one middle number, we have a pair of middle numbers:
13, 15, 15, 15, 16,
(17, 17), 19, 19, 20, 22, 23
To find the value halfway between them, add them together and divide by 2:
17 + 17 = 34
34 ÷ 2 = 17
So the median is A) 17.
