Discrete random variable calculator
E[X] and Var(X) from a PMF table.
Calculator
How to use
Probabilities
Must sum to 1.
Educational use only. For assessments, show reasoning and check boundary cases.
E[X] and Var(X) from a PMF table.
Must sum to 1.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
Discrete X: E[X], Var(X)
Result
E[X] = 2.100000 | Var(X) = 0.490000