Probability Calculator

Statistics and probability are fields that go hand in hand in studying data management and chance using various advanced methods and analysis tools. In probability theory, a distribution is a mathematical function that can characterize the probabilities of occurrence of a specific outcome, while also building a distributional model for the analyzed data set. The Probability Calculator provides access to various distribution models, allowing you to experiment with different parameter values to check confidence intervals and other statistical results.

Probability Calculators feature support for common and special distributions that are widely known and used as standard models both in statistics and probability theory. Depending on your data set and its characteristics, you can opt for one of the available distribution models.

The collection of common models includes the most important continuous random variable: the normal distribution, along with continuous uniform, exponential, and triangular distributions. It allows you to explore discrete random variables, including binomial, discrete uniform, geometric and hyper geometric distributions. Moreover, it features support for Poisson and Beta PERT distributions.

Chi square, Rayleigh, Weibull, Gamma, and negative binomial distributions fall in the special category, along with the popular student's T-test.

Probability Calculator enables you to experiment with different values of the closed interval and the random variable. A few statistical indicators, such as the standard deviation, the median, the entropy, or the skewness are calculated by the application, which also displays the probabilities associated with each interval.

In a custom model, you are free to enter the data you want, as pairs of points and probabilities (which, of course, must have values between 0 and 1, and their sum must be 1). Alternatively, you can use an expression as the density function. Probability Calculator enables you to choose between continuous or discrete distribution in this case as well.

Probability Calculator is a handy tool for statistics and probability specialists and, why not, for students who have such subjects in their curricula. It enables users to learn more about the characteristics of each distribution type and even create custom distributions of their own.