Question

the mean of 40 observation is 160.it was detected on rechecking that the value 165 was wrongly copied as125 for computation of mean . find the correct mean

Answer 1

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Here's Your Answer ⏬

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Step by Step Explanation ;-
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=> Let sum of observations = x

=> Total observations=40

=> mean=160

=> x divided by 40=160

=> x=160*40=6400

=> Correct mean=6400+165-125 divided by 40

=> 6440 divided by 40

=> 161.

Hence , 161 is the right answer.

Answer 2

ANSWER IS 161...................