Q. 325.0( 1 Vote )

If the mean obser

Answer :

Given, mean is ,

and x1, x2, …, xn are n 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.



And we have another series

x1 + a, x2 + a, …,xn + a

Let the new mean be x

Now, From [1] we have

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