The mean of 100 observations is 50. If one of the observations 50 is replaced by 150, the resulting mean will be
Given:
No. of observations = 100
Mean of them = 50
Sum of observations = 100 × 50 = 5000
It is given that one of observation 50, is replaced by 150.
New sum = 5000 – 50 + 150 = 5100.
Resulting mean =