A random variable XXX has P(X=1)=0.2P(X = 1) = 0.2P(X=1)=0.2, P(X=2)=0.3P(X = 2) = 0.3P(X=2)=0.3, P(X=3)=0.5P(X = 3) = 0.5P(X=3)=0.5. What is Var(X)Var(X)Var(X)?
0.4
0.6
0.8
1.0