Answer:
ok sure
Explanation:
So 'mean' basically just means average, and to get the average you must first add together all of the measurements. Then you have to divide that number by how many measurements you have, and in this case that would be 4.
13 + 7 + 9 + 6 = 35
35 ÷ 4 = 8.75
So the answer to this question is 8.75