ddist function

Distributions pqdr wrapper

Density, distribution, quantile function and random number generation for all the distributions in the package.

ddist(
  distribution = "norm",
  x,
  mu = 0,
  sigma = 1,
  skew = 1,
  shape = 5,
  lambda = -0.5,
  log = FALSE
)

pdist(
  distribution = "norm",
  q,
  mu = 0,
  sigma = 1,
  skew = 1,
  shape = 5,
  lambda = -0.5,
  lower_tail = TRUE,
  log = FALSE
)

qdist(
  distribution = "norm",
  p,
  mu = 0,
  sigma = 1,
  skew = 1,
  shape = 5,
  lambda = -0.5,
  lower_tail = TRUE,
  log = FALSE
)

rdist(
  distribution = "norm",
  n,
  mu = 0,
  sigma = 1,
  skew = 1,
  shape = 5,
  lambda = -0.5
)

Arguments

• distribution: a valid distribution.
• x, q: vector of quantiles.
• mu: mean.
• sigma: standard deviation.
• skew: skew parameter.
• shape: shape parameter.
• lambda: additional shape parameter for the Generalized Hyperbolic distribution.
• log: (logical) if TRUE, probabilities p are given as log(p).
• lower_tail: if TRUE (default), probabilities are $P[X \le x]$ otherwise, $P[X > x]$.
• p: vector of probabilities.
• n: number of observations.

Returns

d gives the density, p gives the distribution function, q gives the quantile function and r generates random deviates. Output depends on x or q length, or n for the random number generator.