Conditional probability
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Conditional probability
The probability of an event given that another has happened.
Conditional probability from a two-way table
P(A given B) as a cell over its row or column total, not the grand total.
Conditional probability from a Venn diagram
Dividing the overlap by the region in the condition, not the whole diagram.
Conditional probability on a tree diagram
Why second-stage branches already carry conditional probabilities.
Practice
Practice
Conditional probability
The probability of an event given that another has happened.
PracticeConditional probability from a two-way table
P(A given B) as a cell over its row or column total, not the grand total.
PracticeConditional probability from a Venn diagram
Dividing the overlap by the region in the condition, not the whole diagram.
PracticeConditional probability review
Given-that questions from two-way tables, Venn diagrams and tree diagrams.