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

The mean of n items is bar(x) . If the first item is increased by n, second by n-1 and so on and last by 1, then the new mean is

The mean of n observation is barX . If the first observation is increased by 1^(2) , second by 2^(2) and so on, then the new mean is

The mean of ten items is 17 and if each item is increased by 5, then the new mean will be