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JEE Main Math Class 12 Statistics Part 1 Questions

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Question : 2

Total: 115

The mean and variance of the marks obtained by the students in a test are 10 and 4 respectively. Later, the marks of one of the students is increased from 8 to 12 . If the new mean of the marks is 10.2. then their new variance is equal to:

[25-Jan-2023 Shift 1]

4.04
4.08
3.96
3.92

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