ExponentialSupp | R Documentation |
Raw moments, limited moments and moment generating function for the
exponential distribution with rate rate
(i.e., mean
1/rate
).
mexp(order, rate = 1)
levexp(limit, rate = 1, order = 1)
mgfexp(t, rate = 1, log = FALSE)
order |
order of the moment. |
limit |
limit of the loss variable. |
rate |
vector of rates. |
t |
numeric vector. |
log |
logical; if |
The k
th raw moment of the random variable X
is
E[X^k]
, the k
th limited moment at some limit
d
is E[\min(X, d)^k]
and the moment
generating function is E[e^{tX}]
, k > -1
.
mexp
gives the k
th raw moment,
levexp
gives the k
th moment of the limited loss
variable, and
mgfexp
gives the moment generating function in t
.
Invalid arguments will result in return value NaN
, with a warning.
Vincent Goulet vincent.goulet@act.ulaval.ca, Christophe Dutang and Mathieu Pigeon.
Johnson, N. L. and Kotz, S. (1970), Continuous Univariate Distributions, Volume 1, Wiley.
Klugman, S. A., Panjer, H. H. and Willmot, G. E. (2012), Loss Models, From Data to Decisions, Fourth Edition, Wiley.
Exponential
mexp(2, 3) - mexp(1, 3)^2
levexp(10, 3, order = 2)
mgfexp(1,2)
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