Subject
Quantitative Aptitude
Topic
Average
The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ?
The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ?
ক)
40.36খ)
41.24গ)
41.92ঘ)
42.05Explanation
Given, mean of 100 observations is 40 => Total of 100 observations = 40 100 = 4000 84 is misread as 48 => Difference = 84 - 48 = 36 => Now, new total of 100 observations = 4000 + 36 = 4036 Correct Mean = 4036 100 = 40.36Related questions
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