JEE Mains 27-July-2022 Shift 1 Solved Paper
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Question : 22 of 90
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The mean and variance of 10 observations were calculated as 15 and 15 respectively by a student who took by mistake 25 instead of 15 for one observation. Then, the correct standard deviation is ________.
[27-Jul-2022-Shift-1]
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