Study Guides

Unit Summary

In this unit we build upon the concept of likelihood to work more mathematically with more measurable probability using fraction and decimal representations to both interpret and calculate. We revisit and develop ways to represent and compare probabilities.

Lesson Summary

You will learn to assign a numerical value to an outcome to give the probability that the outcome will occur.

Key Notes

• Probability is a measure of the likelihood of an outcome happening.
• An outcome can be assigned a numerical value from 0 to 1
• The probability scales shows the numerical values that an outcome might have.

Vocabulary To Learn

• Probability: The probability that an event will occur is the proportion of times the event is expected to happen in a suitably large experiment.

Common Mistakes To Avoid

• Pupils think that 'likely' from the scale of likelihoods is only equal to a specific probability (e.g. 75%).

3 Quick Questions (With Answers)

More Lessons In This Unit

• Calculating theoretical probabilities from a table (one event) Study Guide
• Calculating theoretical probabilities from lists (one event) Study Guide
• Calculating theoretical probabilities from probability tree diagrams (one event) Study Guide
• Calculating theoretical probabilities from probability trees (two events) Study Guide
• Calculating theoretical probabilities from two-way tables (two events) Study Guide
• Calculating theoretical probabilities from Venn diagrams (one event) Study Guide
• Calculating theoretical probabilities from Venn diagrams (two events) Study Guide
• Checking listing possible outcomes Study Guide
• Comparing multiple representations to calculate theoretical probabilities Study Guide
• Comparing multiple representations to calculate theoretical probabilities for combined events Study Guide
• Problem solving with theoretical probability Study Guide
• Summing probabilities Study Guide