This exam tips covers Exam Tips for Range and IQR within Range & IQR for GCSE Mathematics. Revise Range & IQR in Statistics for GCSE Mathematics with 12 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 8 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 6 of 8
Practice
12 questions
Recall
20 flashcards
Exam Tips for Range and IQR
- Always arrange data in order before finding quartiles
- Be careful with even/odd numbers when finding medians of halves
- Don't include the median when splitting data into halves for large datasets
- Show your working - especially when finding Q1 and Q3
- Check your answer makes sense - IQR should be less than range
- Units matter - range and IQR have the same units as the original data
- Use IQR for comparisons when asked about consistency or spread
Keep building this topic
Read this section alongside the surrounding pages in Range & IQR. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Range & IQR
The range of a set of data is calculated by:
Explain why the interquartile range (IQR) is sometimes preferred over the range as a measure of spread.
Quick Recall Flashcards
12 questions on Range & IQR — practise free
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