The Expected Value Calculator computes E(X) from probability distributions, frequency tables, or game scenarios. It also calculates variance and standard deviation to give you a complete picture of the distribution.
Enter your values and their probabilities or frequencies, and get instant results with step-by-step working. The game mode tells you whether a game is fair or which side has the advantage.
Your calculations will appear here
Calculate probability of events, complements, unions, and intersections. Free online probability calculator for statistics.
Calculate standard deviation, variance, mean, and more for any dataset. Supports population and sample statistics. Free online tool.
Calculate z-scores, find values from z-scores, and determine probabilities. Free online z-score calculator with bell curve visualisation.
Calculate binomial probabilities, cumulative distributions, and expected values. Free online binomial distribution calculator with bar chart.
Calculate probabilities for normal distributions. Find areas under the bell curve, percentiles, and inverse values. Free online tool.
Calculate Pearson correlation coefficient, R-squared, and regression line. Free online correlation calculator with scatter plot.