Answer :

**(iii)** 34, 66, 30, 38, 44, 50, 40, 60, 42, 51

**Given****,** Numbers of observations are given.

**To Find:** Calculate the Mean Deviation from Mean

**Formula Used:** Mean Deviation =

**Explanation:** Here, Observations 34, 66, 30, 38, 44, 50, 40, 60, 42, 51 are Given.

Mean =

Mean for given data

Deviation |d| = |x-Mean|

And, The number of observations is 10.

Now, The Mean Deviation is

Mean Deviation M.D=

Now,

- M.D = 45.5-9=36.5

+ M.D = 45.5+9=54.5

So, There are total 6 observation between - M.D and + M.D

**(iv)** **Given****,** Numbers of observations are given.

**To Find:** Calculate the Mean Deviation from Mean

**Formula Used:** Mean Deviation =

**Explanation:** Numbers of observations are 22,24,30,27,29,31,25,28,41,42.

Mean =

Mean for given data

Deviation |d| = |x-Mean|

And, The number of observations is 10.

Now, The Mean Deviation is

Mean Deviation M.D=

Now,

- M.D = 29.9-4.88= 25.02

+ M.D = 29.9+4.88=34.78

So, There are total 6 observation between - M.D and + M.D

**(V)** **Given,** Numbers of observations are given.

**To Find:** Calculate the Mean Deviation from Mean

**Formula Used:** Mean Deviation =

**Explanation:** Numbers of observations are 38,70,48,34,63,42,55,44,53,47.

Mean =

Mean for given data

Deviation |d| = |x-Mean|

And, The number of observations is 10.

Now, The Mean Deviation is

Mean Deviation M.D=

Now,

- M.D = 49.4-8.68=40.72

+ M.D = 49.4+8.68=58.08

So, There are total 6 observation between - M.D and + M.D

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