2010 · Q49
The arithmetic mean of 100 numbers was computed as 89.05. It was later found that two numbers 92 and 83 have been misread as 192 and 33 respectively. What is the correct arithmetic mean of the numbers?
Elementary MathematicsStatistics
- A55
- B55
- C55
- DCannot be calculated from the given data
Explanation
Correct sum = 8905-50 = 8855; mean = 88.55.