Mean of a Random Variable

$\displaystyle 0*\frac{4}{16}+1*\frac{7}{16}+2*\frac{5}{16}
$

where $ \frac{4}{16},\frac{7}{16},\frac{5}{16}$ are relative frequencies

$ x$ 0 1 2
$ f(x)$ 4/16 7/16 5/16

$\displaystyle 0*\frac{4}{16}+1*\frac{7}{16}+2*\frac{5}{16}=\frac{17}{16}=1.0625
$

Cem Ozdogan 2012-02-15