The mean of 50 observations was 36. It was found later that an observation 47 was wrongly taken as 23. The corrected new mean is
Select the correct option
A) 35.24 B) 36.16 C) 36.22 D) 36.48 E) None
Solution   Correct sum = (36x50+47-23)   = 1824.   âˆ´ Correct mean = 1824 / 50   = 36.48.   Answer 36.48
<result>D</result>
The mean of 50 observations was 36. It was found later that an observation 47 was wrongly taken as 23. The corrected new mean is