B) The mean of 10 observations was calculated as 40. On rechecking, it – InterviewSolution

1.	B) The mean of 10 observations was calculated as 40. On rechecking, it was detected that the number 45 was incorrectly copied as 15. Find the correct mean.
Answer» 43Step-by-step EXPLANATION:mean of 10 OBSERVATIONS = 40sum of 10 observations = 40 × 10 = 400correct sum = 400-15+45 =430correct mean = 430/10 = 43

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