Mathematics: Applications and Interpretation · Topic 4: Statistics and probability

SL4.6 — Combined events and conditional probability

Mathematics: Applications and Interpretation · SL / HL · syllabus-mapped notes

1. AISL4.6.1

   Diagrams for probability

   Venn diagrams, tree diagrams, sample space diagrams and tables of outcomes.

2. AISL4.6.2

   The addition rule and mutually exclusive events

   P(A or B) = P(A) + P(B) - P(A and B) and the special case P(A and B) = 0.

3. AISL4.6.3

   Conditional probability

   P(A | B) = P(A and B) / P(B) and problems with and without replacement.

4. AISL4.6.4

   Independent events

   P(A and B) = P(A) P(B) and how independence differs from mutual exclusivity.