@qbeta Beta distribution quantile.

@qbinom Binomial distribution quantile.

@qchisq Chi-square distribution quantile.

@qexp Exponential distribution quantile.

@qextreme Extreme value (Type I-minimum) distribution quantile.

@qfdist F-distribution quantile.

@qform Quadratic form.

@qgamma Gamma distribution quantile.

@qged Generalized error distribution quantile.

@qlaplace Laplace distribution quantile.

@qlogistic Logistic distribution quantile.

@qlognorm Log normal distribution quantile.

@qnegbin Negative binomial distribution quantile.

@qnorm Standard normal distribution quantile.

@qpareto Pareto distribution quantile.

@qpoisson Poisson distribution quantiles.

@qr QR decomposition.

@quantile Empirical quantile.

@quantilesby Empirical quantiles of a series for each specified group.

@quarter Quarter of the year of the observation.

@qunif Uniform distribution quantile.

@qweib Weibull distribution quantile.