en>GoingBatty: General fixes & manual clean up, added underlinked tag using AWB (8853)

2013-02-24T17:25:20Z

General fixes & manual clean up, added underlinked tag using AWB (8853)

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{{Probability fundamentals}}
[[File:Probability tree diagram.svg|thumb|Tree diagram for events <math>A</math> and <math>B</math>.]]
{{notability|date=April 2013}}
In [[probability theory]], a '''tree diagram''' may be used to represent a [[probability space]].

Tree diagrams may represent a series of [[Independence (probability)|independent events]] (such as a set of coin flips) or [[Conditional probability|conditional probabilities]] (such as drawing cards from a deck, without replacing the cards).<ref name=gcse_bitesize_treediag>{{cite web|title=Tree Diagrams|url=http://www.bbc.co.uk/schools/gcsebitesize/maths/statistics/probabilityhirev1.shtml|work=BBC GCSE Bitesize|publisher=BBC|accessdate=25 October 2013|page=1,3}}</ref> Each node on the diagram represents an [[Event (probability theory)|event]] and is associated with the probability of that event. The root node represents the certain event and therefore has probability 1. Each set of sibling nodes represents an exclusive and exhaustive partition of the parent event.

The probability associated with a node is the chance of that event occurring after the parent event occurs. The probability that the series of events leading to a particular node will occur is equal to the product of that node and its parents' probabilities.

== References ==
{{Commonscat|Probability trees}}
{{unreferenced|date=October 2012}}
{{reflist}}

[[Category:Probability theory]]
{{probability-stub}}

[[ko:수형도]]

Nuclear transparency - Revision history

en>GoingBatty: General fixes & manual clean up, added underlinked tag using AWB (8853)