The mean of 50 observations was 41. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is
Select the correct option: A) 35.2 B) 36.1 C) 36.5 D) 41.5 E) None
Sol.   Therefore correct sum   = ( 41 × 50 + 48 – 23)   = 2075.   Therefore correct mean   = 2075 / 50   = 41.5.   Answer 41.5
<result>D</result>
The mean of 50 observations was 41. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is