The mean of n items is `overline(X)`. If the first item is increased by 1, second by 2 and so on, then the new mean is

The mean of n terms is bar(x) If the first term is increased by 1, second by 2 and so on, then the new mean is

The mean of 11 items overline(X) . If first item is increased by 1, second item by 2 and so on, then new mean becomes lamda more than overline(X) and lamda is

The mean of 11 items overline(X) . If first item is increased by 1, second item by 2 and so on, then new mean becomes lamda more than overline(X) and lamda is

The mean of n observations is barX . If the first item is increased by 1, second by 2 and so on, then the new mean is___

The mean of n observations is X . If the first item is increased by 1, second by 2 and so on, then the new mean is (a) X +n (b) X +n/2 (c) X +(n+1)/2 (d) None of these