Topic 15 · Statistics & Probability
Probability
Combined events, sample space diagrams, tree diagrams and experimental probability.
By the end of this topic you can…
- Use the fact that mutually exclusive probabilities add to 1
- List the outcomes of two events in a sample space diagram
- Use a tree diagram to find the probability of combined events
- Compare experimental probability with theoretical probability
- Calculate an expected frequency
Lessons
- Successive and Combined Events Listing every outcome of two events, and multiplying probabilities when one event does not affect the other.
- Tree Diagrams Drawing a tree to keep track of two or more events, multiplying along the branches and adding down the ends.
- Experimental Probability What actually happens when you run a trial, how it compares with the theory, and how to predict a frequency.
Probability quiz
Ten questions drawn at random from a bank of fourteen, mixing eight different question types. Answers are marked at the end.
10 questions · pass mark 70%