Expected Value and Variance Worksheet

For each x, record p(x), xp(x), x-mu, and (x-mu)^2p(x).
E(X)=sum xp(x)
Var(X)=sum (x-mu)^2p(x)
SD(X)=sqrt(Var(X))
Expected profit or cost:
Decision comparison:
Risk and tail limitation:

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