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Mean of 10 observations is 50 and their ...

Mean of 10 observations is 50 and their standard deviation is 10. If each observation is subtracted by 5 and then divided by 4, then the new mean and standard deviation are a)`22.5, 2.5` b)`11.25, 2.5` c)`11.5, 2.5` d)`11,2.5`

A

`22.5, 2.5`

B

`11.25, 2.5`

C

`11.5, 2.5`

D

`11,2.5`

Text Solution

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The correct Answer is:
B
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