# Probability Distributions > Standard library probability distribution modules.
## Usage ```javascript var dists = require( '@stdlib/stats/base/dists' ); ``` #### dists Standard library probability distribution modules. ```javascript var distributions = dists; // returns {...} ``` ### Continuous Distributions
- [`arcsine`][@stdlib/stats/base/dists/arcsine]: arcsine distribution. - [`beta`][@stdlib/stats/base/dists/beta]: beta distribution. - [`betaprime`][@stdlib/stats/base/dists/betaprime]: beta prime distribution. - [`cauchy`][@stdlib/stats/base/dists/cauchy]: Cauchy distribution. - [`chi`][@stdlib/stats/base/dists/chi]: Chi distribution. - [`chisquare`][@stdlib/stats/base/dists/chisquare]: Chi-squared distribution. - [`cosine`][@stdlib/stats/base/dists/cosine]: raised cosine distribution. - [`erlang`][@stdlib/stats/base/dists/erlang]: Erlang distribution. - [`exponential`][@stdlib/stats/base/dists/exponential]: exponential distribution. - [`f`][@stdlib/stats/base/dists/f]: fisher's F distribution. - [`frechet`][@stdlib/stats/base/dists/frechet]: Fréchet distribution. - [`gamma`][@stdlib/stats/base/dists/gamma]: gamma distribution. - [`gumbel`][@stdlib/stats/base/dists/gumbel]: Gumbel distribution. - [`invgamma`][@stdlib/stats/base/dists/invgamma]: inverse gamma distribution. - [`kumaraswamy`][@stdlib/stats/base/dists/kumaraswamy]: Kumaraswamy's double bounded distribution. - [`laplace`][@stdlib/stats/base/dists/laplace]: Laplace distribution. - [`levy`][@stdlib/stats/base/dists/levy]: Lévy distribution. - [`logistic`][@stdlib/stats/base/dists/logistic]: logistic distribution. - [`lognormal`][@stdlib/stats/base/dists/lognormal]: lognormal distribution. - [`normal`][@stdlib/stats/base/dists/normal]: normal distribution. - [`pareto1`][@stdlib/stats/base/dists/pareto-type1]: Pareto (Type I) distribution. - [`rayleigh`][@stdlib/stats/base/dists/rayleigh]: Rayleigh distribution. - [`signrank`][@stdlib/stats/base/dists/signrank]: distribution of the Wilcoxon signed rank test statistic. - [`t`][@stdlib/stats/base/dists/t]: Student's t distribution. - [`triangular`][@stdlib/stats/base/dists/triangular]: triangular distribution. - [`truncatedNormal`][@stdlib/stats/base/dists/truncated-normal]: truncated normal distribution. - [`uniform`][@stdlib/stats/base/dists/uniform]: continuous uniform distribution.
### Discrete Distributions
- [`bernoulli`][@stdlib/stats/base/dists/bernoulli]: Bernoulli distribution. - [`binomial`][@stdlib/stats/base/dists/binomial]: binomial distribution. - [`discreteUniform`][@stdlib/stats/base/dists/discrete-uniform]: discrete uniform distribution. - [`geometric`][@stdlib/stats/base/dists/geometric]: geometric distribution. - [`hypergeometric`][@stdlib/stats/base/dists/hypergeometric]: hypergeometric distribution. - [`negativeBinomial`][@stdlib/stats/base/dists/negative-binomial]: negative binomial distribution. - [`poisson`][@stdlib/stats/base/dists/poisson]: Poisson distribution.
### Other
- [`degenerate`][@stdlib/stats/base/dists/degenerate]: degenerate distribution.
## Examples ```javascript var objectKeys = require( '@stdlib/utils/keys' ); var dists = require( '@stdlib/stats/base/dists' ); console.log( objectKeys( dists ) ); ```