Q. 335.0( 3 Votes )

Mean of a certain A.




Answer :

Given, mean is ,

Let x1, x2, …, xk are k observations.

And we know

The mean or average of observations, is the sum of the values of all the observations divided by the total number of observations.



Given, the terms are divided by m and increased by n. Then the terms will be

Let the new mean be x

Now, From [1] we have

Hence correct option is (A)

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses