Probability distributions

Random variables, mean & variance

1 / 5Standard

Find the expected value E(X) of the random variable X.

\begin{array}{c|cccc} X & -1 & 0 & 2 & 4 \\ \hline P & \frac{1}{6} & \frac{1}{3} & \frac{1}{3} & \frac{1}{6} \end{array}