DPQ (version 0.3-3)

qtAppr: Compute Approximate Quantiles of Non-Central t Distribution

Description

Compute quantiles (inverse distribution values) for the non-central t distribution. using Johnson,Kotz,.. p.521, formula (31.26 a) (31.26 b) & (31.26 c)

Note that qt(.., ncp=*) did not exist yet in 1999, when MM implemented qtAppr().

Usage

qtAppr(p, df, ncp, lower.tail = TRUE, log.p = FALSE, method = c("a", "b", "c"))

Arguments

p

vector of probabilities.

df

degrees of freedom \(> 0\), maybe non-integer.

ncp

non-centrality parameter \(\delta\); ....

lower.tail, log.p

logical, see, e.g., qt().

method

a string specifying the approximation method to be used.

Value

...

See Also

qt.

Examples

# NOT RUN {
  ## TODO
# }