Loading...
Loading...
Calculate probabilities using tree diagrams, Venn diagrams, combined events, and conditional probability.
Basic probability introduces the scale from 0 to 1 and the idea of equally likely outcomes. Students calculate probabilities of single events, understand mutually exclusive events, and work with the probability that something does not happen.
Tree diagrams organise multi-stage probability problems into a clear visual structure. Students multiply along branches for combined probabilities and add between branches for alternative outcomes.
Venn diagrams represent sets and their overlaps visually, making them a powerful tool for probability and data classification. Students use them to organise information, find probabilities, and understand set notation including union, intersection and complement.
Combined events involve finding the probability of two or more things happening together or in sequence. Students use the addition rule for OR and the multiplication rule for AND, applying these to independent and dependent events.
Conditional probability deals with the likelihood of an event given that another event has already occurred. This higher-tier topic uses tree diagrams, two-way tables and Venn diagrams to calculate P(A given B).
Expected outcomes use probability to predict how many times an event should occur over a number of trials. Students multiply probability by the number of trials and compare expected results with experimental data.
Take our free diagnostic quiz to find out which probability topics need the most work, then practise with our AI tutor.