Statistics
Mean, median, mode, range, and interpreting data from charts and tables.
Key Concepts
Statistics is one of the core topics in GCSE Maths. Understanding this topic well will help you across multiple areas of your exam, as it connects to many other mathematical concepts.
Start by making sure you understand the fundamental definitions. Work through the examples below carefully, then try the practice questions without looking at the answers first.
This topic appears on both Foundation and Higher tier papers. Higher tier students should be comfortable with the more complex applications and multi-step problems.
Key Terms & Definitions
- Key Term 1: The fundamental concept at the heart of statistics. Make sure you can define this precisely.
- Key Term 2: A related concept that often appears in exam questions alongside statistics.
- Key Term 3: An important process or principle that you need to be able to explain step-by-step.
Example Exam Questions
- [2 marks] Define the key term associated with statistics and give one example.
- [4 marks] Explain how statistics works, using specific terminology in your answer.
- [6 marks] Evaluate the importance of statistics with reference to specific examples you have studied.
Tip: For 6-mark questions, aim for 3 developed points. Each point should have a statement, evidence/example, and explanation.
Common Mistakes to Avoid
- × Confusing key terminology or using everyday language instead of scientific/technical terms.
- × Not showing your working in calculation questions — even if your answer is wrong, method marks can save you.
- × Writing generic answers that could apply to any topic. Be specific to statistics.
- × Running out of time on longer questions because you spent too long on earlier ones.
Exam Tips
- • Read the question carefully — underline command words like “explain”, “evaluate” or “calculate”.
- • The number of marks tells you how much to write. 1 mark = 1 point. 6 marks = detailed response.
- • Use past papers to practise statistics questions under timed conditions.
- • Check the mark scheme after — it shows exactly what examiners are looking for.