Question

What is the median of the data set: 15, -2, 0, 15, 2, 12

Answer 1

To find the median, you have to number it from smallest to largest.
-2,0,2,12,15,15
Since there are 2 medians, you find the average of those two numbers.
2+12 is 14/2 is 7.
7 is the median.

Answer 2

put in order
-2, 0, 2, 12, 15, 15
median is the middle number
so
median = (2+12)/2 = 14/2 = 7

hope it helps