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Deepika Mishra

Class 11th
Maths
2 years ago

The mean and standard deviation of 20 observations are found to be 10 and 2, respectively. On rechecking, it was found that an observation 8 was incorrect. Calculate the correct mean and standard deviation in each of the following cases: ii) If it is replaced by 12.

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Abhishek Mishra

2 years ago

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