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lmomco (version 0.88)

quaexp: Quantile Function of the Exponential Distribution

Description

This function computes the quantiles of the Exponential distribution given parameters ($\xi$ and $\alpha$) of the distribution computed by parexp. The quantile function of the distribution is

$$x(F) = \xi - \alpha \log(1-F) \mbox{,}$$

where $x(F)$ is the quantile for nonexceedance probability $F$, $\xi$ is a location parameter and $\alpha$ is a scale parameter.

Usage

quaexp(f, para)

Arguments

f
Nonexceedance probability ($0 \le F \le 1$).
para
The parameters from parexp or similar.

Value

  • Quantile value for nonexceedance probability $F$.

References

Hosking, J.R.M., 1990, L-moments---Analysis and estimation of distributions using linear combinations of order statistics: Journal of the Royal Statistical Society, Series B, vol. 52, p. 105--124.

Hosking, J.R.M., 1996, FORTRAN routines for use with the method of L-moments: Version 3, IBM Research Report RC20525, T.J. Watson Research Center, Yorktown Heights, New York.

Hosking, J.R.M. and Wallis, J.R., 1997, Regional frequency analysis---An approach based on L-moments: Cambridge University Press.

See Also

cdfexp, parexp

Examples

Run this code
lmr <- lmom.ub(c(123,34,4,654,37,78))
  quaexp(0.5,parexp(lmr))

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