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

Question

asked Oct 17, 2019 77.9k views

2 Answers

Arnab Chakraborty · Answer 1 · 2019-10-24T07:20:40+0000

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