Probability 
Summary

probability is a measure of how likely it is that an event will happen.
a tree diagram allows choices and outcomes for a sequence of events to be displayed.

Key Skills

 use the correct words when talking about probabilities.
 calculate probabilities for events such as rolling dice and tossing coins.
 calculate probabilities for multiple events such as getting a head with a coin followed by a rolling six on a die.
 find the expected value when carrying out several trials e.g. how many heads do you expect to get on 10 tosses of a coin.
 given a set of choices arrange them in a tree diagram
 calculate outcomes from a tree diagram

Vocabulary

median, tree diagram, stem and leaf diagram, probability, experiment,trial, outcome, sample space, event, equally likely outcomes, expected value.
