Answer:
13.75
Step-by-step explanation:
To find the mean(average) you have to add all the numbers together.
17+17+11+10+1+20+17+17=110
Next, you divide that number by how many values there are. In this case, there are 8.
17,17,11,10,1,20,17,17
↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑
1 2 3 4 5 6 7 8
110/8=13.75
