Home · Unit 1 · Topic 5 · Conditional probability and independence

Conditional probability and independence

Understand and use the notion of independence of an event 𝐴 from an event 𝐵, as defined by 𝑃(𝐴|𝐵) = 𝑃(𝐴).

mm-u1-t5-s2-d4

Interactive

Independence — P(A|B) = P(A)

manipulative

Edit a 2×2 contingency table and compare P(A) with P(A|B) and P(A|B′) — equality means independence; mutually exclusive is a different idea.

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