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In an experiment with 15 observations on...

In an experiment with 15 observations on x, the following results were available `Sigma x^(2)=2830 , Sigma x=170` On observation that was 20, was found to be wrong and was replaced by the correct value 30. Then, the corrected variance is

A

`9.3`

B

`78.00`

C

`188.6`

D

`177.3`

Text Solution

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The correct Answer is:
D
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