This exam tips covers Common Mistakes to Avoid within Box Plots for GCSE Mathematics. Revise Box Plots in Statistics for GCSE Mathematics with 18 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 10 of 10 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 10 of 10
Practice
18 questions
Recall
20 flashcards
⚠️ Common Mistakes to Avoid
Calculation Errors:
- ❌ Wrong quartile method: Including/excluding median incorrectly
- ❌ Unsorted data: Not arranging data in order first
- ❌ Mixed up quartiles: Q1 should be smaller than Q3
Drawing Errors:
- ❌ Wrong scale: Not using consistent spacing
- ❌ Box proportions: Making box too wide or narrow
- ❌ Median outside box: Median must be inside the Q1-Q3 box
Interpretation Errors:
- ❌ Confusing IQR with range: IQR is Q3-Q1, range is max-min
- ❌ Overinterpreting small differences: Consider the context and scale
- ❌ Ignoring outliers: Outliers can significantly affect conclusions