Question

What is the mean absolute deviation of attendance at the 4 middle school dances?

Answer 1

Answer equals 9

Explanation:

Answer 2

First find average:

(62+85+78+91)/4 = 79

Now subtract.

|62-79|=17

|85-79|=6

|78-79|=1

|91-79|=12

Now find average again:

(17+6+1+12)/4=9

Your answer is 9