A continuous random variable has PDF f(x)=12f(x) = \frac{1}{2}f(x)=21 for x∈[0,2]x \in [0, 2]x∈[0,2]. What is the variance Var(X)Var(X)Var(X)?
1/21/21/2
1/31/31/3
1/41/41/4
2/32/32/3