The mean of n observation is \[\overline{\mathbf{X}.}\]If the first item is increased by 1, seconds by 2 and so on, then the new mean is

The mean of n observation is \[\overline{\mathbf{X}.}\]If the first it

1.	The mean of n observation is \[\overline{\mathbf{X}.}\]If the first item is increased by 1, seconds by 2 and so on, then the new mean is
A.	\[\overline{X}+n\]
B.	\[\overline{X}+\frac{n}{2}\]
C.	\[\overline{X}+\frac{n+1}{2}\]
D.	None of these
Answer» D. None of these

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The mean of n observation is \[\overline{\mathbf{X}.}\]If the first item is increased by 1, seconds by 2 and so on, then the new mean is

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