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The average of n numbers x(1),x(2), x(3)...

The average of n numbers `x_(1),x_(2), x_(3), ......, x_(n)` is M. If `x_(n)` is replaced by x', then new average is

A

`M-x_(n)+x'`

B

`(nM -x_(n)+x')/(n)`

C

`((n-1) M+x')/(n)`

D

`(M-x_(n) +x')/(n)`

Text Solution

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The correct Answer is:
B
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