The mean of 20 observations in an experiment is 4, lf the observed largest value is 23, find the mean of the remaining observations.
A
4
B
3
C
2.85
D
2.60
E
2.56
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Mean of 20 observations = 4
All the observations = 20 x 4 = 80
Largest observed value = 23
Remaining observation = 80 - 23 = 57
Mean of observation = 57/19 = 3
Source: Myschool Past Questions Archive (Record #23787)