Invlomax {VGAM} | R Documentation |
Density, distribution function, quantile function and random
generation for the inverse Lomax distribution with shape parameter
p
and scale parameter scale
.
dinvlomax(x, scale, p.arg) pinvlomax(q, scale, p.arg) qinvlomax(p, scale, p.arg) rinvlomax(n, scale, p.arg)
x, q |
vector of quantiles. |
p |
vector of probabilities. |
n |
number of observations. If length(n) > 1 , the length
is taken to be the number required. |
p.arg |
shape parameter. |
scale |
scale parameter. |
See invlomax
, which is the VGAM family function
for estimating the parameters by maximum likelihood estimation.
dinvlomax
gives the density,
pinvlomax
gives the distribution function,
qinvlomax
gives the quantile function, and
rinvlomax
generates random deviates.
The inverse Lomax distribution is a special case of the 4-parameter generalized beta II distribution.
T. W. Yee
Kleiber, C. and Kotz, S. (2003) Statistical Size Distributions in Economics and Actuarial Sciences, Hoboken, NJ: Wiley-Interscience.
y = rinvlomax(n=1000, 6, 2) fit = vglm(y ~ 1, invlomax, trace=TRUE, crit="c") coef(fit, mat=TRUE) Coef(fit)