Q. 335.0( 2 Votes )
Mean of a certain number of observations is . If each observation is divided by m(m ≠ 0) and increased by n, then the mean of new observation is
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  we have
Hence correct option is (A)
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