Last Updated：2025/11/28
The probability that an event will take place given the restrictive assumption that another event has taken place, or that a combination of other events has taken place. (Mathematically, the definition would be that the conditional probability of B given A is equal to the joint probability of A and B divided by the probability of A.)
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conditional probability
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Source Word
conditional probability
Noun
The
probability
that
an
event
will
take
place
given
the
restrictive
assumption
that
another
event
has
taken
place,
or
that
a
combination
of
other
events
has
taken
place.
(Mathematically,
the
definition
would
be
that
the
conditional
probability
of
B
given
A
is
equal
to
the
joint
probability
of
A
and
B
divided
by
the
probability
of
A.)
Japanese Meaning
条件付き確率：ある事象が起こるという前提条件の下で、別の事象が起こる確率。 / ある事象が発生したという条件のもとで、別の事象が発生する割合
Sense（1）
The
probability
that
an
event
will
take
place
given
the
restrictive
assumption
that
another
event
has
taken
place,
or
that
a
combination
of
other
events
has
taken
place.
(Mathematically,
the
definition
would
be
that
the
conditional
probability
of
B
given
A
is
equal
to
the
joint
probability
of
A
and
B
divided
by
the
probability
of
A.)
（ plural ）
