HELP NEEDED PLEASE!! WILL GIVE BRAINIEST Find the mean absolute deviation of the following numbers:

12, 15, 17, 18, 15, 20, 22

18/7

Step-by-step explanation:

Note that the mean of the data is equal to (12+15+17+18+15+20+22)/7, which is 17. For each value in the data set, we then find the distance from the mean:

To find the mean absolute deviation, average these distances to get 18/7.

third option: 6x+8

step-by-step explanation:

we can see that the given question is a sum of series and the values of n vary from 0 to 3

the first term will be:

when n=0, [(0)*x+2] => (0+2) => 2

when n=1, [(1)*x+2] => (x+2) => x+2

when n=2, [(2)*x+2] => 2x+2

when n=4, [(3)*x+2] => 3x+2

so adding up all the terms will give us:

=2+x+2+2x+2+3x+2

=x+2x+3x+2+2+2+2

=6x+8

so,

third option is the correct answer ..

don't know sorry bru

step-by-step explanation: