the mean of a hundred observation was found to be 40 later on it was discovered that a score of 27 was misread as 57 find the mean
Answers
Answered by
9
Step-by-step explanation:
mean score = 40
mean=sum of observation /no of observations
sum of observations = mean x no of observations
that is 40 x 100
= 4000
after replacement, sum of new observation=4000-83+53
=4970
mean of new observation = 3970/100
=39.7
Hope it helps and mark it as brainliest if it has helped you. ..
Similar questions