Question

The mean of 36 numbers was found as 42. Later on, it was determined that a number 47 was misread as 41. Find the correct mean of the given numbers (rounded off to two decimal places).

• A. 43.74
• B. 42.17
• C. 42.83
• D. 43.62

Answer 1

Answer:

B. 42.17

Correct mean = (sum of 36 numbers + 6) / 36 = 42.17 (after correcting the misread value).