Mean of 9 observation is35. Later it was detected that
observation 81 was misread as 18. Find correct mean
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Answered by
5
Answer:
mean is 42
Step-by-step explanation:
=> Mean of 9 observations = 35
=> Sum of 9 observations = 35×9
=> Sum of 9 observations =315
• since 81 was misread as 18
Then, sum of new observations = [315- (wrong observation)+(correct observation)]
= 315-18+81
= 315+63= 378
The correct mean = some of new observation/total number of observations
Correct mean= 378/9= 42
Hence, the correct mean is 42
Answered by
2
Answer:
42
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