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

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

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

The average of n numbers x_(1),x_(2),x_(3) . . . . .. ,x_(n) is A. If x_(1) is replaced by (x+a)x_(1),x_(2) is replaced by (x+a)x_(2) and so on. Find the new average.

The AM of the nnumbers x_(1),x_(2)......x_(n) is M. If x_(1) is replaced by x then the new AM is

The mean of the series x_(1),x_(2),...x_(n) is bar(X). If x_(2) is replaced by lambda then the new mean is

Mean of n observations x_(1), x_(2), ....,x_(n) is bar(x) . If an observation x_(q) is replaced by x'_(q) then the new mean is

The mean of the series x_1, x_2,...x_n is barX . If x_2 is replaced by lambda then the new mean is