Math, asked by divina1032, 11 hours ago

Mean of 12 observations is 36 one observation 47 was misread as 74 then corrected mean is

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Answered by starlightwillight

1

Answer:

Mean of 36 observations = 12

Total of 36 observations = 36 x 12 = 432

Correct sum of 36 observations = 432 – 74 + 47 = 405

Correct mean of 36 observations = 405/ 36 =11.25

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