What is the MAD of 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89 ?
I'm very confused.

MAD= mean absolute deviation. Find the mean first. So if you add all the numbers and divide by the amount of numbers. Then you do the data value subtracted by the mean. Mean= 912 divided by 12 which equals 76. 912-76= 836. Sorry if it’s wrong, I don’t remember much from learning this.

Step-by-step explanation:

5 times by 3 gives you 15,

Let’s then simplify the problem,

2x +9 =15

Take the nine from ‘+9’ and ‘15’

This leaves you with 2x = 6

Finally, divide 6 by 2 and your answer will be =3