the mean of 40 observation was 160.It was detected on recheking that the value of 165 was wrongly copied aas 125 for computation of mean.Find the correct mean.
Answers
Answered by
4
160=x/40
6400=x
now,165-125=40
so,6400+40=6440
also,
now new mean=6440/40
=161
6400=x
now,165-125=40
so,6400+40=6440
also,
now new mean=6440/40
=161
Similar questions