Question 316278
{{{EV=sum(x*P(x),1,7)=0(0.18)+1(0.28)+2(0.25)+3(0.18)+4(0.06)+5(0.04)+6(0.01)=1.82}}}
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{{{VAR=(sigma)^2=sum((x-mu)^2*P(x),1,7)=1.9076}}}

where 
{{{mu}}} is the average x value.