Question 1113619: For the sample of 10 values 7, 6, 10, 7, 5, 9, 3, 7, 5, 13 what is the value of Σ(x – xbar)?
Answer by ikleyn(52794)   (Show Source):
You can put this solution on YOUR website! .
If in your notation xbar means the MEAN value of the series, then this sum Σ(x – xbar) is zero.
This sum is ALWAYS zero for ANY finite series.
Particularly, it is equal to zero for the given particular series.
Original Centered
values values x-xbar
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7 -0.2
6 -1.2
10 2.8
7 -0.2
5 -2.2
9 1.8
3 -4.2
7 -0.2
5 -2.2
13 5.8
sum = 72
xbar = 7.2 sum = 0
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