Density, cumulative distribution function, quantile function and random variate generation for many standard probability distributions are available in the stats package.
The functions for the density/mass function, cumulative distribution
function, quantile function and random variate generation are named in the
form dxxx
, pxxx
, qxxx
and rxxx
respectively.
For the beta distribution see dbeta
.
For the binomial (including Bernoulli) distribution see
dbinom
.
For the Cauchy distribution see dcauchy
.
For the chi-squared distribution see dchisq
.
For the exponential distribution see dexp
.
For the F distribution see df
.
For the gamma distribution see dgamma
.
For the geometric distribution see dgeom
. (This is also
a special case of the negative binomial.)
For the hypergeometric distribution see dhyper
.
For the log-normal distribution see dlnorm
.
For the multinomial distribution see dmultinom
.
For the negative binomial distribution see dnbinom
.
For the normal distribution see dnorm
.
For the Poisson distribution see dpois
.
For the Student's t distribution see dt
.
For the uniform distribution see dunif
.
For the Weibull distribution see dweibull
.
For less common distributions of test statistics see
pbirthday
, dsignrank
,
ptukey
and dwilcox
(and see the
‘See Also’ section of cor.test
).
RNG
about random number generation in R.
The CRAN task view on distributions, https://CRAN.R-project.org/view=Distributions, mentioning several CRAN packages for additional distributions.