Calculate the mean deviation about mean of the following data.(i) 1, 4, 7, 8, 9,10, 12, 13, 17

Explanation

Mean(x)=`(4+7+8+9+10+12+13+17)/8`

`​=(80)/8​=10`


Mean deviation about mean=
`|x_i-10|`

`=(6+3+2+1+0+2+3+7)/(8)`

`=(24)/8`

`=3`