Expected Value Calculator
Calculate the expected value (mean) of a probability distribution
About Expected Value
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.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.