Tree Diagrams

It is important that you are familiar with probability tree diagrams.

In the first of these tutorials, you are shown how to draw accurate tree diagrams. This tends to be the route cause of many problems in probability.

You are then shown how to work out conditional probability such as P(A|B)

Finally an example is set to demonstrate these concepts.

So grab a pen and a paper, you will need it in the next tutorial!

 

• Probability Tree Diagrams

 

Venn Diagrams

I have yet to complete the revision guide but for now the best way to work through this is by using the exam examples in which I have tried to explain each step in some detail.