Question

Calculate the mean deviation about the mean of the following data. 3. 7, 5, 9, 10, 13, 15, 18​

Answer 1

Answer:

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.