Four students, P, Q, R, and S, measure the time taken for a steel sphere to fall through a cylinder of glycerol. Each student records three independent trials of this measurement.
| Student | Trial 1 (s) | Trial 2 (s) | Trial 3 (s) |
|---|---|---|---|
| P | 4.18 | 4.42 | 4.25 |
| Q | 4.22 | 4.31 | 4.25 |
| R | 4.223 | 4.288 | 4.341 |
| S | 4.15 | 4.32 | 4.28 |
Which student collected the data with the highest precision?
Student P
Student Q
Student R
Student S
47 exam-style questions on OCR GCSE Physics Practical skills. Each one has a worked solution and a mark scheme showing where the marks go.