Easily compute the mean (expected value), variance, and standard deviation for discrete probability distributions. Input your X values and their corresponding P(X) probabilities to instantly analyze your data. Essential for students, statisticians, and researchers needing quick statistical insights into random phenomena.
Formula:
E(X) = Σ [x · P(X=x)]
Var(X) = Σ [x2 · P(X=x)] - [E(X)]2
SD(X) = √Var(X)
Where x represents the random variable's value and P(X=x) is its corresponding probability.