Expected Value Calculator

Calculate the expected value (mean) of a probability distribution

Values (comma-separated):

Probabilities (comma-separated, must sum to 1):

The expected value (E(X)) is the weighted average of all possible values, where weights are the probabilities.

Formula: E(X) = Σ(x₁ × p₁)

It represents the long-run average value of repetitions of the same experiment.