Mathematics: Analysis and Approaches · Topic 4: Statistics and probability

SL4.11 — Conditional probability and independence

Mathematics: Analysis and Approaches · SL / HL · syllabus-mapped notes

1. Formal conditional probability

   The definition P(A|B) = P(A n B)/P(B) and its rearranged multiplication form.

2. Testing for independence

   Using P(A|B) = P(A) = P(A|B') to decide whether events are independent.