The mean of 40 observations was 160. It was detected on re-checking that the value of 165 was wrongly copied as 125 for computation of mean. Find the correct mean.
(also this is from data handling)
Answers
Answered by
2
Answer:
New mean=161
Step-by-step explanation:
mean of 40=160
total number=160×40
=6400
orignal value=165
wrong value=125
correction= add (165-125)
=add 40
New number=6400+40
=6440
New mean=6440/40
=161
Similar questions