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JEE MATHEMATICS MCQ: STATISTICS

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Mean of a data set is 10 and variance is 4 . If one entry of data set changes from 8 to 12 , then new mean becomes 10.2. Then new variance is:

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Correct option: B

3.96

Option B (3.96) is correct because the new variance is calculated by considering the change in the data set and applying the variance formula.

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