Ditribution Functions (Density, Probability, Quantile, Random Numbers).

betadf - Beta   [demo]
cauchydf - Cauchy
chidf - Chi-squared
expdf - Exponential
gammadf - Gamma
gumbeldf - Gumbel
laplacedf - Laplace (double exponential)
lognormdf - Lognormal
logisdf - Logistic
normdf - Normal (gaussian)
paretodf - Pareto
raydf - Rayleigh
tdf - Student's t
triangledf - Triangle
unifdf - Continuous uniform
weibulldf - Weibull