qinvGamma(p, a, b, lower.tail = TRUE, log.p = FALSE)The quantile value(s).
(numeric)
vector of probabilities.
(number)
the shape parameter of the inverse gamma distribution.
(number)
the scale parameter of the inverse gamma distribution.
(flag)
if TRUE (default), probabilities are P(X <= x),
otherwise, P(X > x).
(flag)
if TRUE, probabilities/densities p are given as log(p).