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The mean and standard deviation of 20 it...

The mean and standard deviation of 20 items is found to be 10 and 2 respectively. At the time of checking it was found that one item 8 was incorrect. If it is replaced by 12, then find the mean and variance

A

10.2, 4.01

B

10.1, 3.69

C

10.2, 3.96

D

10.2, 3.76

Text Solution

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The correct Answer is:
C
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