Statistical analysis, probability and other statistical calculations.
Free expected value calculator. Enter values and probabilities as decimals, percentages or fractions and get E(X), the variance,…
Calculate sensitivity, specificity, accuracy, PPV, NPV, and positive/negative likelihood ratios from a 2x2 diagnostic table.…
Calculate the average dice roll for any number and type of dice (d4, d6, d8, d10, d12, d20, d100 or custom) with an optional…
Free cubic regression calculator. Find the cubic curve of best fit y = a + bx + cx² + dx³ for any dataset. Computes coefficients…
Free point estimate calculator. Find the best point estimate using four methods: Maximum Likelihood (MLE), Wilson, Laplace,…
Calculate the number of permutations nPr = n!/(n−r)! where order matters. Get permutations with repetition, the related combination…
Calculate posterior probability using Bayes' theorem. Enter prior probability P(A), likelihood P(B|A), and false positive…
Free t-statistic calculator. Compute the t-value (t-score) from sample mean, population mean, sample size, and standard deviation.…
Calculate the probability of at least one, all three, exactly one, or none of three independent events occurring. Enter P(A),…
Free quadratic regression calculator. Find the parabola of best fit y = a + bx + cx² for any dataset. Computes coefficients…
Calculate your exact probability of winning any lottery using the hypergeometric formula. Enter pool size, balls drawn, and…
Free exponential regression calculator. Find the exponential curve of best fit y = a·bˣ for any dataset. Computes coefficients…
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