The mean of 50 observations was 36. It was found later that an observation 30 was wrongly taken as 23. The corrected new mean is : Choose the correct choice from the following answers: A) 36.02 B) 36.14 C) 36.12 D) 36.11 E) 36.8

Rationale: explanation : correct sum = ( 36 * 50 + 30 - 23 ) = 1825 . correct mean = = 1807 / 50 = 36.14 answer : b ) 36.14
Answer: B