Here are the quiz scores of seven students.
| 15 | 8 | 12 | 20 | 15 | 14 | 7 |
| ---- | --- | ---- | ---- | ---- | ---- | --- |
Work out the range of these quiz scores.
Work out the median of these quiz scores.
Work out the mean of these quiz scores.
Practise WJEC GCSE Maths Averages with exam-style questions for Foundation and Higher tier. 48 questions, matched to the WJEC GCSE Maths (3320QD) specification and written in Unit 1, Unit 2 and Unit 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.