{0,7,8,8,10,11,14,15,17,17.5,18,18,18,20,30} what is the average Rounded to the nearest 10th

The average of this set of numbers is (0+7+8+8+10+11+14+15+17+17.5+18+18+18+20+30)/15 = 194.5/15 = 12.97

Rounded to the nearest tenth, the average is 13.