The mean of 20 observations in an experiment is 4, lf the observed largest value is 23, find the mean of the remaining observations.
- 4
-
3
- 2.85
- 2.60
- 2.56
The correct answer is: B
Explanation
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