Last Updated：2025/11/21
(statistics) Any of a class of discrete probability distributions that express the probability of a given number of events occurring in a fixed time interval, where the events occur independently and at a constant average rate; describable as a limit case of either binomial or negative binomial distributions.
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Poisson distribution
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Source Word
Poisson distribution
Noun
(statistics)
Any
of
a
class
of
discrete
probability
distributions
that
express
the
probability
of
a
given
number
of
events
occurring
in
a
fixed
time
interval,
where
the
events
occur
independently
and
at
a
constant
average
rate;
describable
as
a
limit
case
of
either
binomial
or
negative
binomial
distributions.
Japanese Meaning
統計学における離散確率分布の一種で、一定の時間または空間内で、事象が独立して一定の平均発生率で発生する確率を表す。これは、二項分布や負の二項分布の極限として導かれる分布である。
Sense（1）
(statistics)
Any
of
a
class
of
discrete
probability
distributions
that
express
the
probability
of
a
given
number
of
events
occurring
in
a
fixed
time
interval,
where
the
events
occur
independently
and
at
a
constant
average
rate;
describable
as
a
limit
case
of
either
binomial
or
negative
binomial
distributions.
（ plural ）
