S.D. of a data is 6. When each observati...

S.D. of a data is 6. When each observation is increased by 1, then the S.D. of new data is

A

5

B

7

C

6

D

8

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Knowledge Check

Choose the most appropriate options. The standard deviation of a data is 6, when each observation is increased by 1, then the standard deviation of new data is

A

5

B

7

C

6

D

8

If each observation is multiplied by 1/3 then the mean of the new data will be

A

`1/3` times

B

3 times

C

`3/sqrt3` times

D

`2/3` times

The mean deviation of an unground data is 50. If each observation is increased by 2% then the new mean deviation is

A

50

B

21

C

49

D

`50.5`

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