जॉइन Examsbookउत्तर : 1. "40.36"
The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ?5
प्र: The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ?
- 140.36true
- 241.24false
- 341.92false
- 442.05false
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उत्तर : 1. "40.36"
व्याख्या :
Answer: A) 40.36 Explanation: Given, mean of 100 observations is 40 => Total of 100 observations = 40 x 100 = 4000 84 is misread as 48 => Difference = 84 - 48 = 36 => Now, new total of 100 observations = 4000 + 36 = 4036 Correct Mean = 4036/100 = 40.36