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JEE Main Math Class 12 Statistics Part 2 Questions

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Question : 9

Total: 28

The mean and standard deviation of 15 observations were found to be 12 and 3 respectively. On rechecking it was found that an observation was read as 10 in place of 12 . If µ and σ2 denote the mean and variance of the correct observations respectively, then 15(µ+µ2+σ2) is equal to___

[27-Jan-2024 Shift 2]

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