Question

if mean of n term is x . and if 1st term is increased by1 and 2 nd term is increased by 2 and so on than find the new mean

Answer 1

Let the numbers be $x_{y}$ (0 ≤ y < n), then the mean of the given set is

∑$x_{i}$ / n = $S_{1}$

But the new mean is $S_{2} [/text] = (1 + [tex] x_{1}$) + (2 + $x_{2} [/text]) + ... / n =(3/n) + [tex] S_{1}$

= x + 3/n