the mean of50 obdervation was found to be 80.4 but later it was discov – InterviewSolution

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1.	the mean of50 obdervation was found to be 80.4 but later it was discovered that 96 was misread as 69at one place find the correct mean
Answer» Sum of all 50 observations = mean * no of observation = 80.4x 50 = 4020 now according to question 96 was misread by 69 So the new sum of observation = 4020 - 69 + 96 = 4020 + 27 = 40.47 now new mean = 4047/50 = 80.94 answer

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