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The average of 100 observations was calculated as 35. It was found later, that one of the observations was misread as 83 instead of 53. The correct average is :
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- 32.7
- 34.7
- 35.7
- 36.7
- 32.7
Correct Option: B
According to question ,
Difference = 83 – 53 = 30
Incorrect observation > Correct observation
| ∴ Required average = 35 - | = 35 - 0.3 = 34.7 | |
| 100 |
