What is the median of the data? 12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18

First you order then:

10, 12, 12, 12, 13, 14, 14, 16, 17, 18, 19, 20

Then you find the two middle numbers.

14 and 14.

You add them together and divide by two to get your answer:

14.

The middle number is the median so if you cross out all the others the answers will be 13