The mean of 40 observations was 200. It was detected by rechecking that the value of 65 was wrongly copied as 25 for computation of mean. Find the corrected mean.
Answers
Answered by
33
mean = 40 for 200 observation
then sum of observation = 40*200 = 8000
given 65 is wrong copied as 25 then
we remove 65 and add 25
thus
sum.of observation = 8000 - 65 + 25 = 7960
thus new mean will be
new mean = 7960/40 = 199
Plz mark as BRAINLIST if this answer deserves it
then sum of observation = 40*200 = 8000
given 65 is wrong copied as 25 then
we remove 65 and add 25
thus
sum.of observation = 8000 - 65 + 25 = 7960
thus new mean will be
new mean = 7960/40 = 199
Plz mark as BRAINLIST if this answer deserves it
karthikasokan16:
yep you deserve it but only if two persons answer it i can mark you as the brainliest so sorry
why if 2 person answer do u not sure about my answer
My friend your answer is incorrect.
no its correct
Answered by
11
Mean of 40 observation is 200.
Attachments:
good try my friend but your answer is wrong
65 was wrongly copied as 25 so we subtract 25 and add 65?
My answer is correct.
I have confirmed
Marks as brainliest andwer pls
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