Statistics Calculators

Relative Error Calculator Calculate relative error as a fraction or percentage. Open calculator → Quadratic Mean Calculator Calculate the quadratic mean, also known as root mean square. Open calculator → Confidence Interval Known Sigma Calculator Calculate a z-based confidence interval when population standard deviation is known. Open calculator → Probability Calculator Finds the probability from the numbers you enter. Enter the trials / population, successes / selections, and probability. Open calculator → Mode Calculator Use the Mode Calculator to calculate mode from the values in your problem. Open calculator → Winsorized Mean Calculator Use the Winsorized Mean Calculator to calculate winsorized mean from the values in your problem. Open calculator → Normal Distribution Calculator Use the Normal Distribution Calculator to calculate normal distribution from the values in your problem. Open calculator → Bayes Theorem Calculator Calculate bayes theorem from the values you enter, with the relevant formula, method, worked example, and accuracy checks. Open calculator → Q1 Calculator Calculate the first quartile of a data set. Open calculator → Multiple Linear Regression Calculator Fit a multiple linear regression model from a response and predictors. Open calculator → Gini Coefficient Calculator Calculate the Gini coefficient for inequality in a numeric distribution. Open calculator → Chebyshev Theorem Calculator Calculate the minimum proportion within k standard deviations using Chebyshev's theorem. Open calculator →