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The mean and standard deviation of 100 o...

The mean and standard deviation of 100 observations were calculated as 40 and 5.1 respectively by a student who took by mistake 50 instead of 40 for one observation. What are the correct mean sand standard deviation?

A

4

B

6

C

3

D

5

Text Solution

Verified by Experts

The correct Answer is:
D
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