Mean of 36 observations is 10 one observation 47 was misread as 57 find the correct mean

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Mean of 36 observations = 12Total of 36 observations = 36 x 12 = 432Correct sum of 36 observations = 432 – 74 + 47 = 405

Correct mean of 36 observations =  405/ 36 =11.25

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Mean of 36 observations = 12Total of 36 observations = 36 x 12 = 432Correct sum of 36 observations = 432 – 74 + 47 = 405

Correct mean of 36 observations =  405/ 36 =11.25

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