\(\epsilon \)(xi – x)2 where xi = 1, 2, 3, 4, 5
(xi – x)2 where xi = 1, 2, 3, 4, 5
Mmm
Do you mean
\(\displaystyle\sum_{\xi=1}^5\;(\xi-5)^2\quad?\)
\(\displaystyle\sum_{\xi=1}^5\;(\xi-5)^2\\ =(1-5)^2+(2-5)^2+(3-5)^2+(4-5)^2+(5-5)^2\\ =16+9+4+1+0\\ =30\)
