Median is finding the middle number, you need to put the set of numbers from least to greatest. My set is 0,0,0,0,0,0,2,3,4,4,8,20, 100 so my median is 2.
Last but not least, the range. That's when you take the largest number (100) and the smallest number (0) and subtract. So I would do 100-0=100, and my range is 100.