The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150, the resulting mean will be :
A. 50.5
B. 51
C. 51.5
D. 52
Answer:B
The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150, the resulting mean will be :
A. 50.5 B. 51 C. 51.5 D. 52