easy · Quantitative Finance prob-stats
According to the Law of Total Variance, how is Var(X) related to the results of the Tower Property?
- Var(X) = E[Var(X|Y)] + Var(E[X|Y])
- Var(X) = E[E[X|Y]]^2
- Var(X) = Var(X|Y) + E[X]
- Var(X) = E[X^2] + E[X]^2
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