Tree diagrams

Can you work out which spinners were used to generate the frequency charts?

When two closely matched teams play each other, what is the most likely result?

Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?

Predict future weather using the probability that tomorrow is wet given today is wet and the probability that tomorrow is wet given that today is dry.

Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?

Which of these games would you play to give yourself the best possible chance of winning a prize?

Discs are flipped in the air. You win if all the faces show the same colour. What is the probability of winning?

Are these games fair? How can you tell?

This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.