Mean of 100 observations is found to be 40. If at the time of computat – InterviewSolution

1.	Mean of 100 observations is found to be 40. If at the time of computation two items are wrongly taken as 30 and 27 instead of 3 and 72, find the correct mean.(Ans-40.18)
Answer» tion:mean = sum of observation / NUMBER of observation sum of observation= no of observation × mean100 × 40 = 400030 + 27 = 573 + 72 = 7575 - 57 = 184000 + 18 = 40184018 / 100 = 40.18hope it will HELP you .

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