Question

the mean of 15 observations is 35 later on it was a known that the value of a one observation was taken as 50 which was wrong find the mean of remaining observation by excluding the wrong observation​

Answer 1

Answer:

33.9

Step-by-step explanation:

Mean = (sum of 15 obs)/15

35 = (Sum of 15 observations)/15

525 = sum of 15 obs.

As given, the value of a one observation was taken as 50 which was wrong.

Sum of obs = 525 - 50 = 475

No. of obs = 15 - 1 = 14

    ∴ Mean = 475/14 = 33.9

Answer 2

Answer:

☆☆Answered by Rohith kumar maths dude: -

☆Answer is 33.9.

•Mean=sum of 15 observations

15

•35=sum of 15 observations

15

•35×15= sum of 15 observations

•525= sum of 15 observations

●First you want to know that the value of one observations was taken as 50 that is wrong.

▪Sum of observations =500-50

=475.

▪No of observations =15-1

=14.

▪Therefore the

▪Mean = 475

14

▪ Mean = 33.9.

☆Hope it helps u mate.

☆Thank you.