A piano teacher claims that making pupils practise for longer causes them to perform better. To assess this claim, she examines existing weekly practice records and performance-test scores for six pupils.
| Pupil | Practice per week (hours) | Performance score (out of 30) |
|---|---|---|
| A | 2 | 15 |
| B | 3 | 18 |
| C | 4 | 20 |
| D | 5 | 23 |
| E | 6 | 24 |
| F | 7 | 27 |
Explain what the results suggest about the relationship between practice and performance, and whether they support the teacher's claim that practising for longer causes better performance.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.