Question

calculate the mean deviation about the mean of the following date 3,7,5,9,10,13,15,18​

Answer 1

Answer:

Correct option is D)

Let the mean of data be u=

n

∑x

i

=

10

120

=12

Calculating the deviation : ∣x

i

−u∣ we get,

3,5,−2,1,5,6,3,6,2,1.

∴M.D(u)=

n

∑∣x

i

−u∣

=

10

34

=3.4

Thus, M.D(u)=3.4.

Ans- Option D