Math, asked by karthikasokan16, 1 year ago

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 Sandeep03edu

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

karthikasokan16: yep you deserve it but only if two persons answer it i can mark you as the brainliest so sorry

Sandeep03edu: why if 2 person answer do u not sure about my answer

Amirverma: My friend your answer is incorrect.

Sandeep03edu: no its correct

Answered by Amirverma

Mean of 40 observation is 200.

Attachments:

karthikasokan16: good try my friend but your answer is wrong

Amirverma: 65 was wrongly copied as 25 so we subtract 25 and add 65?

Amirverma: My answer is correct.

Amirverma: I have confirmed

Amirverma: Marks as brainliest andwer pls

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