CTET Solved Paper MCQ - UTET April 2015 Paper2
The mean of n observation is m.
if m2 - m + 1 is added to cach observation, then the mean will increase by m2 - m + 1,
Then new mean = m + m2 - m + 1
= (1 + m2)
if m2 - m + 1 is added to cach observation, then the mean will increase by m2 - m + 1,
Then new mean = m + m2 - m + 1
= (1 + m2)
