2025 · Q100
The arithmetic mean of 100 observations was 50. Later on, it was found that two observations were misread as 82 and 6 instead of 182 and 56. What is the value of the corrected mean?
Elementary MathematicsStatistics
- A50.1
- B51.5
- C52.3
- D53.4
Explanation
The recorded values 82 and 6 should be 182 and 56, adding 150 to the total; corrected mean = 50 + 150/100 = 51.5, option (b).