Tree diagrams are a way of showing combinations of two or more events. Each branch is labelled at the end with its outcome and the probability is written alongside the line.

GCSE Edexcel Probability - Edexcel Tree diagrams Probabilities can be written as fractions, decimals or percentages on a scale from 0 to 1.

The calculation method for the occurrence probability of bottom events in the fault tree is introduced. The Binary Decision Diagram (BDD) method is then applied to calculate the failure probability of ...