Lomax {VGAM} | R Documentation |
Density, distribution function, quantile function and random
generation for the Lomax distribution with scale parameter scale
and shape parameter q
.
dlomax(x, scale, q.arg) plomax(q, scale, q.arg) qlomax(p, scale, q.arg) rlomax(n, scale, q.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. |
q.arg |
shape parameter. |
scale |
scale parameter. |
See lomax
, which is the VGAM family function
for estimating the parameters by maximum likelihood estimation.
dlomax
gives the density,
plomax
gives the distribution function,
qlomax
gives the quantile function, and
rlomax
generates random deviates.
The 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 = rlomax(n=2000, 6, 2) fit = vglm(y ~ 1, lomax(init.q=2.1), trace=TRUE, crit="c") coef(fit, mat=TRUE) Coef(fit)