Answer:
11
Explanation:
a "mean" is an average of a data set.
you can find this by adding all terms together (17 + 12 + 7 + 10 + 9)
and then dividing by the total number of terms (in this case, 5)
so, your equation would be (17 + 12 + 7 + 10 + 9 = 55) 55 / 5
55 / 5 = 11
so, for this example, 11 would be the mean
....
further explanation:
if the concept of adding terms and dividing to get an average is confusing, try thinking about it with fewer terms,
so the average of 2 and 4 is halfway (1/2) between them. so, 2+4 (6) / 2 = 3
3 is midway between
so, lets say we want to find the average of 3 numbers, like 2, 4, and 6. we want to find the number in between all of these. so like we did for the previous, add 2+4+6 (12) and divide by 3 [# of terms) to get 4.
hope this helps!