If x bar is the arithmetic mean of n observations x1,x2,x3,..........xn, then find the arithmetic mean of x1+a, x2+a, xn+a.
Pls answer it fast........
Answers
Answered by
4
X bar is the arithmetic mean so
X bar=x1+x2+...........+xn/n
Adding a on both sides
X bar+a=x1+a+x2+a........xn+a/n
So the answer is X bar + a
Answered by
2
Given mean of n arithmetic observations, is
We have to find mean of
We know that, mean = (sum of observations)/(total number of observations)
So, mean =
Here, total observations is n, and a is added to them n times, so we can write
mean
=
Hence, the new mean would be equal to the original mean + a
Similar questions