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truncdist (version 1.0-2)

qtrunc: Quantitle Function for Truncated Random Variable

Description

This function evaluates the inverse of the cumulative distribution funciton for a truncated random variable or so the so called quantile function for a given vector of probabilities and the specified distribution.

Usage

qtrunc(p, spec, a = -Inf, b = Inf, ...)

Arguments

p
A vector of probabilities
spec
a character value that specifies the underlying probability distribution
a
a numeric value for the lower bound of the random variable
b
a numeric value for the upper bound of the random variable
...
other arguments are are passed to the corresponding quantile and distribution function

Value

A vector of quantile values in the range of the truncated random variable.

References

Nadarajah, S. and S. Kotz, 2006. R Programs for Computing Truncated Distributions, Journal of Statistical Software, 16, August 2006, http://www.jstatsoft.org/v16/c02

Examples

Run this code
p <- seq( .1, .9, .01 )
q <- qtrunc( p, spec="norm", a=1, b=2 )

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