Tiglon
Tiglon
20-08-2016
Mathematics
contestada
If the mean of the observations x1, x2....,xn is ,
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caylus
caylus
20-08-2016
Hello,
[tex]\sum_{i=1}^n\ ( x_{i} -\overline{x})\\ =\sum_{i=1}^n\ x_{i} -\ \overline{x}\ \sum_{i=1}^n\ 1\\ =n*\overline{x}- \overline{x}*n=0 [/tex]
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