I think the answer would be (3) 17.7
To find mean, you add all the numbers up and divide by how many numbers there are. So in this case, you would do….
11+15+17+19+20+24
=106
Divide by 6 (because there are six numbers)
=17.6666
So the closest answer would be
(3) 17.7
I hope this helps!
