Find the median of the data.

15, 4, 3, 20, 12, 13, 12

4 is the median

Step-by-step explanation:

median = (n+1) / 2

= (7 + 1) / 2

=8/2

=4

12

Step-by-step explanation:

First arrange the values in order from least to greatest

3, 4 12, 12, 13, 15, 20

The median is the number in the middle. Since 12 is the middle value of the data set, 12 is the median.