Math, asked by fairyn376, 5 months ago

the mean and standard deviations of 20 items are found to be 10 and 2 respectively. at the time of checking, it was found that one item 8 is incorrect. Calculate the mean and standard deviation If (a) the wrong item is omitted (b) replaced by 12.

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Answered by wonderfulbishnu

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This is the correct answer . Mark me as brainliest.

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