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A set of 100 observations has a mean of 40, but two observations were wrongly taken as 30 and 27 instead of the correct 3 and 72.
Find the correct mean.

Class 9Measures of Central TendencyStatistics and Probability
  • A40.18
  • B44.18
  • C36.18
  • D80.36

Step-by-Step Solution

Wrong total = . Correct total = . Correct mean = .
Answer: A) 40.18

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